* feat: adds region service and procedure service
* refactor: adds procedure service for ddl and region task
* feat: adds QueryProcedureRequest
* feat: improve ProcedureStateResponse and MigrateRegionRequest
* fix: forgot headers
* fix: remove cluster_id in MigrateRegionRequest
* refactor: rename Procedure to ProcedureService
* chore: rename peer
* fix: forgot java Procedure
* feat: add go protobuf generation
* ci: check go protbuf generation
* refactor: use 'namely/protoc-all:1.51_1' to compile the proto instead of locally binary
* refactor: no need to add the 'bin/' igore
* chore: modify code format
* refactor: add some comments to describe our modification