Add federation sync configuration SQL table and RPC endpoints #1449

Job	Run time
Docker build check	4m 1s
cross compilation	12m 40s
Compilation check	41s
Format check	36s
run itests	8m 7s
run itests postgres	11m 14s
Lint check	2m 46s
go mod check	36s
RPC check	1m 40s
test vector check	1m 14s
Sqlc check	34s
run unit tests (unit-race)	5m 49s
run unit tests (unit-cover)	4m 39s
run unit tests (unit dbbackend=postgres)	4m 37s
	59m 14s

Provide feedback