SQL: Migrate to use SDK contracts (#36635)

* convert SQLs to use sdk contracts

* make draft

* postgres

* intermedia

* get datasourceinfo filled at the beginning of the service

* move the interval into package because of cyclict  import and fix all postgres tests

* fix mysql test

* fix mssql

* fix the test for pr https://github.com/grafana/grafana/issues/35839

* fix some issue about intervalv2 package

* update sql test

* wire migration for SQLs

* add sqls to the background process

* make it register instead of register and start

* revert formatting

* fix tests

* fix linter

* remove integration test

* Postgres test fix

Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>

pkg/tsdb/influxdb/query.go

@@ -8,7 +8,7 @@ import (
 	"time"
 
 	"github.com/grafana/grafana-plugin-sdk-go/backend"
-	"github.com/grafana/grafana/pkg/tsdb"
+	"github.com/grafana/grafana/pkg/tsdb/intervalv2"
 )
 
 var (
@@ -29,7 +29,7 @@ func (query *Query) Build(queryContext *backend.QueryDataRequest) (string, error
 		res += query.renderTz()
 	}
 
-	intervalText := tsdb.FormatDuration(query.Interval)
+	intervalText := intervalv2.FormatDuration(query.Interval)
 	intervalMs := int64(query.Interval / time.Millisecond)
 
 	res = strings.ReplaceAll(res, "$timeFilter", query.renderTimeFilter(queryContext))