[1.2.0-rc3] TraceAPI: Add core.vaulta.abi and update eosio.* abis

[heifner]

Add core.vaulta.abi and update eosio.* abis in trace_api_plugin example abis.

Example output with:

--plugin eosio::trace_api_plugin --trace-rpc-abi eosio=../../../plugins/trace_api_plugin/examples/abis/eosio.abi --trace-rpc-abi eosio.token=../../../plugins/trace_api_plugin/examples/abis/eosio.token.abi --trace-rpc-abi core.vaulta=../../../plugins/trace_api_plugin/examples/abis/core.vaulta.abi

curl  http://127.0.0.1:8888/v1/trace_api/get_block -d '{"block_num": 439273660}' | jq  

...
        {
          "global_sequence": "363985764702",
          "receiver": "eosiopowcoin",
          "account": "eosio.token",
          "action": "transfer",
          "authorization": [
            {
              "account": "eosiopowcoin",
              "permission": "active"
            }
          ],
          "data": "301d459c56ea3055502f459566aca461010000000000000004454f53000000000a526566756e6420454f53",
          "return_value": "",
          "params": {
            "from": "eosiopowcoin",
            "to": "gamestopcorp",
            "quantity": "0.0001 EOS",
            "memo": "Refund EOS"
          }
        },
 
...

        {
          "global_sequence": "363985764725",
          "receiver": "dex.velox",
          "account": "core.vaulta",
          "action": "transfer",
          "authorization": [
            {
              "account": "1aaaaim.sat",
              "permission": "active"
            }
          ],
          "data": "00b2c1403a638c090000e834aa0dba4a14bb05000000000004410000000000001c61646466756e642d392d3161616161696d2e73617440747261646572",
          "return_value": "",
          "params": {
            "from": "1aaaaim.sat",
            "to": "dex.velox",
            "quantity": "37.5572 A",
            "memo": "addfund-9-1aaaaim.sat@trader"
          }
        },

Resolves #1562