Add federation sync configuration SQL table and RPC endpoints #1444

Job	Run time
Docker build check	4m 39s
Format check	32s
Compilation check	53s
cross compilation	4m 25s
run itests	5m 44s
run itests postgres	9m 21s
Lint check	3m 16s
RPC check	1m 52s
go mod check	43s
Sqlc check	25s
test vector check	1m 18s
run unit tests (unit-race)	5m 47s
run unit tests (unit-cover)	2m 10s
run unit tests (unit dbbackend=postgres)	4m 35s
	45m 40s

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