feat: Add GA integration, support for GA4 (#4626)

* GA integration settings

* trackingId -> measurementId
Hook up script

* Public page GA tracking
Correct layout of settings

* Remove multiple codepaths for loading GA measurementID, add missing db index

* Remove unneccessary changes, tsc

* test

server/env.ts

@@ -330,7 +330,7 @@ export class Environment {
   public RELEASE = this.toOptionalString(process.env.RELEASE);
 
   /**
-   * A Google Analytics tracking ID, only v3 supported at this time.
+   * A Google Analytics tracking ID, supports only v3 properties.
    */
   @Contains("UA-")
   @IsOptional()