* add grpc only mode flag
* add change log
* add tmNode nil check
* only flag to modes
* fix close for query mode
* fix hint
* keep grpc-only & json-rpc-only
* rm space
* mv apiSrv close
* mv cpuProfileCleanup
* mv tmNode stop
* disable indexer on query only
which need tm client on start
* update nix
* revert json-rpc-only change