feat(contracts): reduce xrecv gas usage (#477)

Reduce XApp.xrecv gas usage by 95k.

- Trim data stored in current xmsg, to only what's needed
- And pinpong gas usage tests
- Update mock A,portal to enforce gas limits, and error when it runs out
of gas
- Refactor xtype comments.

task: none

contracts/.gas-snapshot

@@ -19,31 +19,35 @@ OmniAVS_allowlist_Test:test_registerOperator_notAllowed_reverts() (gas: 46150)
 OmniAVS_allowlist_Test:test_registerOperator_succeeds() (gas: 665181)
 OmniAVS_allowlist_Test:test_removeFromAllowlist_notOwner_reverts() (gas: 42408)
 OmniAVS_allowlist_Test:test_removeFromAllowlist_succeeds() (gas: 109421)
-OmniAVS_initialize_Test:test_initialize_defaultParams_succeeds() (gas: 2813515)
-OmniAVS_syncWithOmni_Test:test_depositBeaconEth_succeeds() (gas: 435921)
-OmniPortal_admin_Test:test_setFeeOracle_nonOwner_reverts() (gas: 20316)
-OmniPortal_admin_Test:test_setFeeOracle_succeeds() (gas: 31829)
-OmniPortal_admin_Test:test_setFeeOracle_zero_reverts() (gas: 20369)
-OmniPortal_exec_Test:test_exec_aheadOffset_reverts() (gas: 26102)
-OmniPortal_exec_Test:test_exec_behindOffset_reverts() (gas: 174314)
-OmniPortal_exec_Test:test_exec_wrongChainId_reverts() (gas: 23451)
-OmniPortal_exec_Test:test_exec_xmsgRevert_succeeds() (gas: 136972)
-OmniPortal_exec_Test:test_exec_xmsg_succeeds() (gas: 185744)
-OmniPortal_feeFor_Test:test_feeFor_defaultGasLimit_succeeds() (gas: 33868)
-OmniPortal_feeFor_Test:test_feeFor_succeeds() (gas: 32649)
-OmniPortal_xcall_Test:test_xcall_defaultGasLimit_succeeds() (gas: 85112)
-OmniPortal_xcall_Test:test_xcall_explicitGasLimit_succeeds() (gas: 85682)
-OmniPortal_xcall_Test:test_xcall_gasLimitTooHigh_reverts() (gas: 51410)
-OmniPortal_xcall_Test:test_xcall_gasLimitTooLow_reverts() (gas: 51422)
-OmniPortal_xcall_Test:test_xcall_insufficientFee_reverts() (gas: 49767)
-OmniPortal_xcall_Test:test_xcall_sameChain_reverts() (gas: 51328)
-OmniPortal_xsubmit_Test:test_xsubmit_duplicateValidator_reverts() (gas: 13339596)
-OmniPortal_xsubmit_Test:test_xsubmit_invalidAttestationRoot_reverts() (gas: 13385413)
-OmniPortal_xsubmit_Test:test_xsubmit_invalidMsgs_reverts() (gas: 13372444)
-OmniPortal_xsubmit_Test:test_xsubmit_noQuorum_reverts() (gas: 13346389)
-OmniPortal_xsubmit_Test:test_xsubmit_wrongChainId_reverts() (gas: 13406671)
-OmniPortal_xsubmit_Test:test_xsubmit_wrongStreamOffset_reverts() (gas: 13398495)
-OmniPortal_xsubmit_Test:test_xsubmit_xblock1_chainB_succeeds() (gas: 13601007)
-OmniPortal_xsubmit_Test:test_xsubmit_xblock1_succeeds() (gas: 13602458)
-OmniPortal_xsubmit_Test:test_xsubmit_xblock2_chainB_succeeds() (gas: 13876255)
-OmniPortal_xsubmit_Test:test_xsubmit_xblock2_succeeds() (gas: 13879244)
+OmniAVS_initialize_Test:test_initialize_defaultParams_succeeds() (gas: 2816263)
+OmniAVS_syncWithOmni_Test:test_depositBeaconEth_succeeds() (gas: 471685)
+OmniPortal_admin_Test:test_setFeeOracle_nonOwner_reverts() (gas: 20322)
+OmniPortal_admin_Test:test_setFeeOracle_succeeds() (gas: 31835)
+OmniPortal_admin_Test:test_setFeeOracle_zero_reverts() (gas: 20375)
+OmniPortal_exec_Test:test_exec_aheadOffset_reverts() (gas: 26120)
+OmniPortal_exec_Test:test_exec_behindOffset_reverts() (gas: 109351)
+OmniPortal_exec_Test:test_exec_wrongChainId_reverts() (gas: 23457)
+OmniPortal_exec_Test:test_exec_xmsgRevert_succeeds() (gas: 65774)
+OmniPortal_exec_Test:test_exec_xmsg_succeeds() (gas: 123626)
+OmniPortal_feeFor_Test:test_feeFor_defaultGasLimit_succeeds() (gas: 33874)
+OmniPortal_feeFor_Test:test_feeFor_succeeds() (gas: 32664)
+OmniPortal_xcall_Test:test_xcall_defaultGasLimit_succeeds() (gas: 85136)
+OmniPortal_xcall_Test:test_xcall_explicitGasLimit_succeeds() (gas: 85719)
+OmniPortal_xcall_Test:test_xcall_gasLimitTooHigh_reverts() (gas: 51441)
+OmniPortal_xcall_Test:test_xcall_gasLimitTooLow_reverts() (gas: 51453)
+OmniPortal_xcall_Test:test_xcall_insufficientFee_reverts() (gas: 49798)
+OmniPortal_xcall_Test:test_xcall_sameChain_reverts() (gas: 51359)
+OmniPortal_xsubmit_Test:test_xsubmit_duplicateValidator_reverts() (gas: 13339687)
+OmniPortal_xsubmit_Test:test_xsubmit_invalidAttestationRoot_reverts() (gas: 13384885)
+OmniPortal_xsubmit_Test:test_xsubmit_invalidMsgs_reverts() (gas: 13371916)
+OmniPortal_xsubmit_Test:test_xsubmit_noQuorum_reverts() (gas: 13346498)
+OmniPortal_xsubmit_Test:test_xsubmit_wrongChainId_reverts() (gas: 13406161)
+OmniPortal_xsubmit_Test:test_xsubmit_wrongStreamOffset_reverts() (gas: 13397997)
+OmniPortal_xsubmit_Test:test_xsubmit_xblock1_chainB_succeeds() (gas: 13563996)
+OmniPortal_xsubmit_Test:test_xsubmit_xblock1_succeeds() (gas: 13565447)
+OmniPortal_xsubmit_Test:test_xsubmit_xblock2_chainB_succeeds() (gas: 13810154)
+OmniPortal_xsubmit_Test:test_xsubmit_xblock2_succeeds() (gas: 13813143)
+PingPong_Test:test_pingpong_norecv_gas() (gas: 84424)
+PingPong_Test:test_pingpong_norecv_twice_gas() (gas: 109133)
+PingPong_Test:test_pingpong_recv_gas() (gas: 87065)
+PingPong_Test:test_pingpong_recv_twice_gas() (gas: 117652)