feat: region procedure service (#137)

* 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

build.rs

@@ -39,9 +39,11 @@ fn main() {
                 "proto/greptime/v1/meta/heartbeat.proto",
                 "proto/greptime/v1/meta/route.proto",
                 "proto/greptime/v1/meta/ddl.proto",
+                "proto/greptime/v1/meta/region.proto",
                 "proto/greptime/v1/meta/store.proto",
                 "proto/greptime/v1/meta/lock.proto",
                 "proto/greptime/v1/meta/cluster.proto",
+                "proto/greptime/v1/meta/procedure.proto",
                 "proto/greptime/v1/region/server.proto",
                 "proto/greptime/v1/index/inverted_index.proto",
                 "proto/prometheus/remote/remote.proto",