Correlations: Create first version of correlations on app platform (#110843)

* WIP

* Generate API

* use different logging, change typing as recommended

* Add feature flag and only add to installer when enabled

* add codeowner

* Lint/fmt

* fix dockerfile

* move from UID to group/name reference

* add generated code

* change from enterprise build

* build workspace

* Remove deprecated field, build api, build for enterprise, build workspace

* Not sure what caused this..

* Rebuild?

* Fix this file

* update sdk

* update sdk

* fix workspace

* fix test build

* add to go.mod

---------

Co-authored-by: Ryan McKinley <ryantxu@gmail.com>

pkg/registry/apps/correlations/register.go

@@ -0,0 +1,44 @@
+package correlations
+
+import (
+	restclient "k8s.io/client-go/rest"
+
+	"github.com/grafana/grafana-app-sdk/app"
+	appsdkapiserver "github.com/grafana/grafana-app-sdk/k8s/apiserver"
+	"github.com/grafana/grafana-app-sdk/simple"
+	"github.com/grafana/grafana/apps/correlations/pkg/apis"
+	correlationsapp "github.com/grafana/grafana/apps/correlations/pkg/app"
+	"github.com/grafana/grafana/pkg/services/featuremgmt"
+	"github.com/grafana/grafana/pkg/setting"
+)
+
+var (
+	_ appsdkapiserver.AppInstaller = (*CorrelationsAppInstaller)(nil)
+)
+
+type CorrelationsAppInstaller struct {
+	appsdkapiserver.AppInstaller
+	cfg *setting.Cfg
+}
+
+func RegisterAppInstaller(
+	cfg *setting.Cfg,
+	features featuremgmt.FeatureToggles,
+) (*CorrelationsAppInstaller, error) {
+	installer := &CorrelationsAppInstaller{
+		cfg: cfg,
+	}
+	provider := simple.NewAppProvider(apis.LocalManifest(), nil, correlationsapp.New)
+
+	appConfig := app.Config{
+		KubeConfig:   restclient.Config{}, // this will be overridden by the installer's InitializeApp method
+		ManifestData: *apis.LocalManifest().ManifestData,
+	}
+	i, err := appsdkapiserver.NewDefaultAppInstaller(provider, appConfig, &apis.GoTypeAssociator{})
+	if err != nil {
+		return nil, err
+	}
+	installer.AppInstaller = i
+
+	return installer, nil
+}