Unified Storage: create kind_version table migration, add SQL and fix db (#87977)

* fix database interfaces

* add queries

* fix queries

* fix linters

* add owner to imported go library

* remove unused funcs

* run go work sync

* improve critical section fix in data race fix

* fix linters

* remove sync

* fix typo

* improve data embedding

* fix linters

* fix migration

* remove unnecessary comments

* fix linters

* improve SQL templates readability

* remove group_version from kind_version for consistency in History method

* add created_at and updated_at columns to kind_version table

pkg/services/store/entity/db/dbimpl/dbimpl.go

@@ -4,6 +4,10 @@ import (
 	"fmt"
 
 	"github.com/dlmiddlecote/sqlstats"
+	"github.com/jmoiron/sqlx"
+	"github.com/prometheus/client_golang/prometheus"
+	"xorm.io/xorm"
+
 	"github.com/grafana/grafana/pkg/infra/db"
 	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/infra/tracing"
@@ -12,9 +16,6 @@ import (
 	entitydb "github.com/grafana/grafana/pkg/services/store/entity/db"
 	"github.com/grafana/grafana/pkg/services/store/entity/db/migrations"
 	"github.com/grafana/grafana/pkg/setting"
-	"github.com/jmoiron/sqlx"
-	"github.com/prometheus/client_golang/prometheus"
-	"xorm.io/xorm"
 )
 
 var _ entitydb.EntityDBInterface = (*EntityDB)(nil)
@@ -128,3 +129,14 @@ func (db *EntityDB) GetSession() (*session.SessionDB, error) {
 func (db *EntityDB) GetCfg() *setting.Cfg {
 	return db.cfg
 }
+
+func (db *EntityDB) GetDB() (entitydb.DB, error) {
+	engine, err := db.GetEngine()
+	if err != nil {
+		return nil, err
+	}
+
+	ret := NewDB(engine.DB().DB, engine.Dialect().DriverName())
+
+	return ret, nil
+}