[sql39]: Actions schemas, queries and SQL store impl #2500

Job	Run time
frontend tests on ubuntu-latest	2m 48s
frontend tests on macOS-latest	3m 2s
cross compilation (arm, darwin-arm64 linux-armv6 linux-armv7 linux-arm64)	17m 12s
frontend tests on windows-latest	7m 22s
cross compilation (amd64, darwin-amd64 linux-amd64 windows-amd64)	13m 28s
RPC proto compilation check	4m 32s
cross compilation (i386, linux-386)	4m 58s
check commits	5m 8s
backend build on windows-latest	15m 26s
backend build on macOS-latest	4m 39s
backend build on ubuntu-latest	10m 49s
Sqlc check	21s
run unit tests (unit-race)	6m 32s
run unit tests (unit)	4m 31s
lint	5m 1s
integration test (postgres, itest-no-backward-compat icase=terminal dbbackend=postgres)	47m 53s
integration test (custom-channels, itest-only icase=custom_channels)	18m 52s
run unit tests (unit dbbackend=postgres)	5m 26s
integration test (sqlite, itest-no-backward-compat icase=terminal dbbackend=sqlite)	11m 0s
integration test (bbolt, itest-no-backward-compat icase=terminal dbbackend=bbolt)	10m 52s
run unit tests (unit dbbackend=sqlite)	4m 44s
check release notes updated	-1s
	3h 24m 35s

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