Change C++ application entry point to remove dependency on frontends

[eddyashton]

This is a breaking change, and requires a change in all C++ applications

We currently expose the full implementation of RpcFrontend, because we ask applications to extend this type to define their entry point. The decoupling of Frontend and EndpointRegistry means this is unnecessary - applications define all of their actualy logic in an EndpointRegistry, and wrap that in near-identical boiler plate to give us an RpcFrontend.

The benefit of this new approach is that the definition of several complex types like ccf::NetworkTables and ccf::RpcFrontend can remain part of the private implementation, and are not exposed to apps. However, it is a late-breaking change to the 2.0 API, so merits discussion.

[ghost]

remove_public_network_tables@42172 aka 20220218.41 vs main ewma over 20 builds from 41790 to 42144

Click to see table

main

build_id	build_number	tpcc_sgx_cft^	tpcc_sgx_cft_mem	ls_sgx_cft^	ls_sgx_cft_mem	ls_jwt_sgx_cft^	ls_jwt_sgx_cft_mem	ls_js_sgx_cft^	ls_js_sgx_cft_mem	ls_v8_sgx_cft^	ls_v8_sgx_cft_mem	ls_full_js_sgx_cft^	ls_full_js_sgx_cft_mem	ls_full_v8_sgx_cft^	ls_full_v8_sgx_cft_mem	ls_js_jwt_sgx_cft^	ls_js_jwt_sgx_cft_mem	hist_sgx_cft^	RB put (/s)^	CHAMP put (/s)^	RB get (/s)^	CHAMP get (/s)^
41790	20220215.2	6048.05	9.03128e+07	19906	1.71746e+07	5686.33	1.58639e+07	2544.02	1.03588e+07	1642.59	1.63451e+08	2170.01	9.83456e+06	1471.8	9.87014e+07	1921.84	9.31027e+06	20003.4	924058	1.35736e+06	9.19619e+06	3.66369e+07
41819	20220215.13	5961.57	9.08371e+07	20085.7	1.6126e+07	5614.26	1.53396e+07	2549.07	1.2456e+07	1660.44	1.61354e+08	2170.95	9.83456e+06	1477.95	9.87014e+07	1975.43	9.04813e+06	20036.4	913181	1.37191e+06	9.36867e+06	3.5189e+07
41839	20220215.20	6037.49	9.10992e+07	20014.2	1.6126e+07	5693.99	1.56017e+07	2649.45	1.03588e+07	1677.76	1.63713e+08	2164.08	1.00967e+07	1505.08	9.81771e+07	1932.56	9.57242e+06	19848.4	895881	1.35628e+06	9.35578e+06	3.58042e+07
41851	20220215.25	6003.55	9.08371e+07	19996.4	1.58639e+07	5619.51	1.56017e+07	2531.12	1.03588e+07	1630.16	1.63975e+08	2162.59	1.00967e+07	1443.5	9.87014e+07	1934.6	9.57242e+06	18235	895333	1.39357e+06	9.44645e+06	3.65056e+07
41861	20220215.29	5995.07	9.03128e+07	19962.2	1.63882e+07	5640.8	1.56017e+07	2537.86	1.35046e+07	1625.91	1.63451e+08	2111.27	1.00967e+07	1469.38	9.79149e+07	1970.53	9.31027e+06	20076.6	888073	1.39642e+06	9.22514e+06	3.56168e+07
41879	20220215.35	5867.64	8.97885e+07	19734.9	1.6126e+07	5682.42	1.56017e+07	2527.3	1.0621e+07	1629.15	1.63713e+08	2051.63	1.21939e+07	1463.9	9.89635e+07	1961.04	9.04813e+06	19070.9	907997	1.35315e+06	9.36867e+06	3.65714e+07
41919	20220215.49	5659.44	9.05749e+07	18947.4	1.63882e+07	5526.55	1.56017e+07	2472.27	9.83456e+06	1572.28	1.63451e+08	2138.1	9.04813e+06	1423.79	9.87014e+07	1914.34	9.31027e+06	18735.6	877457	1.34356e+06	9.0419e+06	3.50679e+07
41940	20220215.57	5976.65	9.26721e+07	20000.8	1.63882e+07	5684.32	1.56017e+07	2524.82	1.03588e+07	1661.56	1.64237e+08	2109.61	1.03588e+07	1475.98	9.87014e+07	1878.96	1.11453e+07	21970.4	904869	1.3768e+06	9.27112e+06	3.58669e+07
41943	20220216.1	6053.86	9.10992e+07	19977.7	1.63882e+07	5632.89	1.6126e+07	2524.46	1.0621e+07	1663.47	1.63975e+08	2166.73	1.00967e+07	1482.81	9.89635e+07	1969.38	9.31027e+06	17362.9	879418	1.40148e+06	9.40308e+06	3.58669e+07
41971	20220217.1	5961.12	9.00506e+07	19956.7	1.66503e+07	5662.83	1.56017e+07	2545.28	1.03588e+07	1655.01	1.62402e+08	2185.9	9.83456e+06	1487.66	9.87014e+07	1984.7	9.31027e+06	19455.6	908722	1.38303e+06	9.21688e+06	3.67019e+07
42010	20220217.15	6000.5	9.03128e+07	19673.9	1.69124e+07	5661.87	1.58639e+07	2400.44	1.03588e+07	1637.96	1.63451e+08	2230.07	9.57242e+06	1478.06	9.87014e+07	1966.5	9.31027e+06	17686.2	903869	1.38602e+06	9.30905e+06	3.63766e+07
42017	20220217.18	5901.08	9.13613e+07	19836	1.74367e+07	5518.43	1.56017e+07	2533.56	1.00967e+07	1638.9	1.62665e+08	2149.57	9.83456e+06	1450.01	9.87014e+07	1937.65	1.11453e+07	19972	901482	1.39044e+06	9.33876e+06	3.58669e+07
42040	20220217.26	5837.37	8.97885e+07	19762.9	1.66503e+07	5636.59	1.56017e+07	2538.87	1.0621e+07	1644.94	1.63189e+08	2163.74	1.00967e+07	1462.36	9.76528e+07	1964.24	9.83456e+06	20054.6	903595	1.37394e+06	9.28798e+06	3.57417e+07
42063	20220218.1	5836.31	8.97885e+07	19979.8	1.58639e+07	5654.85	1.58639e+07	2534.49	1.03588e+07	1652.36	1.645e+08	2161.46	9.83456e+06	1461.92	9.89635e+07	2018.57	8.78598e+06	21834.2	903032	1.37219e+06	9.22934e+06	3.58663e+07
42069	20220218.3	6118.04	9.16235e+07	18538.9	1.6126e+07	5573.33	1.58639e+07	2525.65	1.03588e+07	1656.49	1.64237e+08	2162.93	1.00967e+07	1425.53	9.87014e+07	1964.72	9.31027e+06	20305.9	906268	1.41857e+06	9.4074e+06	3.54939e+07
42075	20220218.5	5645.07	9.05749e+07	19205.9	1.66503e+07	5589.19	1.56017e+07	2531.81	1.0621e+07	1635.21	1.61878e+08	2160.44	1.03588e+07	1467.45	9.87014e+07	1968.46	9.31027e+06	18034.8	922557	1.38107e+06	9.4074e+06	3.64413e+07
42089	20220218.11	5970.53	9.10992e+07	19748.5	1.63882e+07	5613.78	1.58639e+07	2526.78	1.08831e+07	1620.27	1.63975e+08	2114.89	9.83456e+06	1422.61	9.76528e+07	1907.5	9.31027e+06	18943.2	910096	1.38537e+06	9.25855e+06	3.57417e+07
42094	20220218.13	5968.92	9.00506e+07	20004.6	1.6126e+07	5685.72	1.56017e+07	2542.61	1.0621e+07	1659.39	1.61354e+08	2167.73	1.00967e+07	1477.41	9.92257e+07	1972.93	9.04813e+06	19940.9	910262	1.37829e+06	9.20445e+06	3.58036e+07
42121	20220218.24	5867.23	9.00506e+07	19773.3	1.66503e+07	5581.76	1.56017e+07	2542.89	1.03588e+07	1629.23	1.645e+08	2164.03	1.00967e+07	1479.84	9.84392e+07	1968.76	9.04813e+06	17943.9	893929	1.39395e+06	9.39445e+06	3.55556e+07
42144	20220218.32	5924.88	8.97885e+07	19749.4	1.69124e+07	5693.79	1.58639e+07	2523.42	1.0621e+07	1619.45	1.63975e+08	2165.48	1.14074e+07	1460.44	9.89635e+07	1938.67	9.57242e+06	19984.8	907952	1.38377e+06	9.21265e+06	3.58663e+07

remove_public_network_tables

build_id	build_number	tpcc_sgx_cft^	tpcc_sgx_cft_mem	ls_sgx_cft^	ls_sgx_cft_mem	ls_jwt_sgx_cft^	ls_jwt_sgx_cft_mem	ls_js_sgx_cft^	ls_js_sgx_cft_mem	ls_v8_sgx_cft^	ls_v8_sgx_cft_mem	ls_full_js_sgx_cft^	ls_full_js_sgx_cft_mem	ls_full_v8_sgx_cft^	ls_full_v8_sgx_cft_mem	ls_js_jwt_sgx_cft^	ls_js_jwt_sgx_cft_mem	hist_sgx_cft^	RB put (/s)^	CHAMP put (/s)^	RB get (/s)^	CHAMP get (/s)^
41970	20220216.11	5751.92	9.05749e+07	19940	1.63882e+07	5675.98	1.56017e+07	2539.04	9.83456e+06	1591.38	1.63189e+08	2157.83	9.83456e+06	1474.77	9.89635e+07	2022.03	8.78598e+06	20164.5	906991	1.36396e+06	9.30059e+06	3.56794e+07
41978	20220217.3	5816.98	9.08371e+07	19327.6	1.66503e+07	5647.79	1.56017e+07	2549.02	9.83456e+06	1642.28	1.63713e+08	2158.77	9.83456e+06	1477.28	9.84392e+07	1969.66	9.31027e+06	18294.2	908117	1.37062e+06	9.21273e+06	3.58669e+07
42172	20220218.41	5963.81	8.97885e+07	19977.7	1.63882e+07	5622.52	1.56017e+07	2529.76	1.0621e+07	1619.45	1.63189e+08	2156.28	9.83456e+06	1474.1	9.84392e+07	2008.32	8.78598e+06	20236.3	921431	1.39755e+06	9.22934e+06	3.65708e+07