feat: events system implementation (#4246)

* chore: save poc

* chore: save wip

* fix: undo cors

* fix: impl changes

* fix: PR changes

* fix: mocks

* fix: connection tracking and auth changes

* fix: PR changes

* fix: revert license

* feat: frontend change

* fix: revert docker compose.dev

* fix: duplicate publisher connection

* fix: pr changes

* chore: move event impl to `ee`

* fix: lint errors

* fix: check length of events

* fix: static permissions matching

* fix: secretPath

* fix: remove source prefix in bus event name

* fix: license check

backend/src/ee/services/license/license-fns.ts

@@ -59,7 +59,8 @@ export const getDefaultOnPremFeatures = (): TFeatureSet => ({
   secretScanning: false,
   enterpriseSecretSyncs: false,
   enterpriseAppConnections: false,
-  fips: false
+  fips: false,
+  eventSubscriptions: false
 });
 
 export const setupLicenseRequestWithStore = (