chore: remove sqlstore & mockstore dependencies from (most) packages (#57087)

* chore: add alias for InitTestDB and Session

Adds an alias for the sqlstore InitTestDB and Session, and updates tests using these to reduce dependencies on the sqlstore.Store.

* next pass of removing sqlstore imports
* last little bit
* remove mockstore where possible

pkg/plugins/manager/manager_integration_test.go

@@ -14,6 +14,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"gopkg.in/ini.v1"
 
+	"github.com/grafana/grafana/pkg/infra/db"
 	"github.com/grafana/grafana/pkg/infra/tracing"
 	"github.com/grafana/grafana/pkg/plugins"
 	"github.com/grafana/grafana/pkg/plugins/backendplugin/coreplugin"
@@ -27,7 +28,6 @@ import (
 	"github.com/grafana/grafana/pkg/services/featuremgmt"
 	"github.com/grafana/grafana/pkg/services/licensing"
 	"github.com/grafana/grafana/pkg/services/searchV2"
-	"github.com/grafana/grafana/pkg/services/sqlstore"
 	"github.com/grafana/grafana/pkg/setting"
 	"github.com/grafana/grafana/pkg/tsdb/azuremonitor"
 	"github.com/grafana/grafana/pkg/tsdb/cloudmonitoring"
@@ -95,7 +95,7 @@ func TestIntegrationPluginManager(t *testing.T) {
 	pg := postgres.ProvideService(cfg)
 	my := mysql.ProvideService(cfg, hcp)
 	ms := mssql.ProvideService(cfg)
-	sv2 := searchV2.ProvideService(cfg, sqlstore.InitTestDB(t), nil, nil, tracer, features, nil, nil, nil)
+	sv2 := searchV2.ProvideService(cfg, db.InitTestDB(t), nil, nil, tracer, features, nil, nil, nil)
 	graf := grafanads.ProvideService(sv2, nil)
 
 	coreRegistry := coreplugin.ProvideCoreRegistry(am, cw, cm, es, grap, idb, lk, otsdb, pr, tmpo, td, pg, my, ms, graf)