chore: add lifecycleMetrics flag definition (#10033)

Adds the new lifecycleMetrics flag.

frontend/src/interfaces/uiConfig.ts

@@ -92,6 +92,7 @@ export type UiFlags = {
     featureLinks?: boolean;
     projectLinkTemplates?: boolean;
     customMetrics?: boolean;
+    lifecycleMetrics?: boolean;
 };
 
 export interface IVersionInfo {

src/lib/types/experimental.ts

@@ -65,6 +65,7 @@ export type IFlagKey =
     | 'reportUnknownFlags'
     | 'lastSeenBulkQuery'
     | 'newGettingStartedEmail'
+    | 'lifecycleMetrics'
     | 'customMetrics';
 
 export type IFlags = Partial<{ [key in IFlagKey]: boolean | Variant }>;
@@ -307,6 +308,10 @@ const flags: IFlags = {
         process.env.UNLEASH_EXPERIMENTAL_NEW_GETTING_STARTED_EMAIL,
         false,
     ),
+    lifecycleMetrics: parseEnvVarBoolean(
+        process.env.UNLEASH_EXPERIMENTAL_LIFECYCLE_METRICS,
+        false,
+    ),
 };
 
 export const defaultExperimentalOptions: IExperimentalOptions = {

src/server-dev.ts

@@ -58,6 +58,7 @@ process.nextTick(async () => {
                         projectLinkTemplates: true,
                         reportUnknownFlags: true,
                         customMetrics: true,
+                        lifecycleMetrics: true,
                     },
                 },
                 authentication: {