UsageInsights: Disable frontend features when backend is disabled (#77772)

* UsageInsights: Disable frontend features when backend is disabled

* Disable DS insights

* Update doc

* fix linter issue

* Update docs/sources/setup-grafana/configure-grafana/_index.md

Co-authored-by: Christopher Moyer <35463610+chri2547@users.noreply.github.com>

---------

Co-authored-by: Christopher Moyer <35463610+chri2547@users.noreply.github.com>

pkg/api/dtos/frontend_settings.go

@@ -62,6 +62,10 @@ type FrontendSettingsReportingDTO struct {
 	Enabled bool `json:"enabled"`
 }
 
+type FrontendSettingsAnalyticsDTO struct {
+	Enabled bool `json:"enabled"`
+}
+
 type FrontendSettingsUnifiedAlertingDTO struct {
 	MinInterval              string `json:"minInterval"`
 	AlertStateHistoryBackend string `json:"alertStateHistoryBackend,omitempty"`
@@ -209,6 +213,7 @@ type FrontendSettingsDTO struct {
 	Caching                 FrontendSettingsCachingDTO         `json:"caching"`
 	RecordedQueries         FrontendSettingsRecordedQueriesDTO `json:"recordedQueries"`
 	Reporting               FrontendSettingsReportingDTO       `json:"reporting"`
+	Analytics               FrontendSettingsAnalyticsDTO       `json:"analytics"`
 	UnifiedAlertingEnabled  bool                               `json:"unifiedAlertingEnabled"`
 	UnifiedAlerting         FrontendSettingsUnifiedAlertingDTO `json:"unifiedAlerting"`
 	Oauth                   map[string]any                     `json:"oauth"`

pkg/api/frontendsettings.go

@@ -223,6 +223,9 @@ func (hs *HTTPServer) getFrontendSettings(c *contextmodel.ReqContext) (*dtos.Fro
 		Reporting: dtos.FrontendSettingsReportingDTO{
 			Enabled: hs.Cfg.SectionWithEnvOverrides("reporting").Key("enabled").MustBool(true),
 		},
+		Analytics: dtos.FrontendSettingsAnalyticsDTO{
+			Enabled: hs.Cfg.SectionWithEnvOverrides("analytics").Key("enabled").MustBool(true),
+		},
 
 		UnifiedAlerting: dtos.FrontendSettingsUnifiedAlertingDTO{
 			MinInterval: hs.Cfg.UnifiedAlerting.MinInterval.String(),