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/elasticsearch/client/client_test.go

@@ -13,7 +13,7 @@ import (
 	"github.com/grafana/grafana-plugin-sdk-go/backend"
 	"github.com/grafana/grafana/pkg/components/simplejson"
 	"github.com/grafana/grafana/pkg/infra/httpclient"
-	"github.com/grafana/grafana/pkg/tsdb"
+	"github.com/grafana/grafana/pkg/tsdb/intervalv2"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -319,7 +319,7 @@ func createMultisearchForTest(t *testing.T, c Client) (*MultiSearchRequest, erro
 	t.Helper()
 
 	msb := c.MultiSearch()
-	s := msb.Search(tsdb.Interval{Value: 15 * time.Second, Text: "15s"})
+	s := msb.Search(intervalv2.Interval{Value: 15 * time.Second, Text: "15s"})
 	s.Agg().DateHistogram("2", "@timestamp", func(a *DateHistogramAgg, ab AggBuilder) {
 		a.Interval = "$__interval"