[1.x] [extensibility] Export all missing modules in compat (#4044)

* chore(emoji): export missing modules in compat API

* chore(flags): export missing modules in compat API

* chore(likes): export missing modules in compat API

* chore(lock): export missing modules in compat API

* chore(markdown): export missing modules in compat API

* chore(mentions): export missing modules in compat API

* chore(nicknames): export missing modules in compat API

* chore(extension-manager): export missing modules in compat API

* chore(statistics): export missing modules in compat API

* chore(sticky): export missing modules in compat API

* chore(subscriptions): export missing modules in compat API

* chore(suspend): export missing modules in compat API

* chore(tags): export missing modules in compat API

* chore(core): export missing modules in compat API

* chore: fix tsconfig

js/tsconfig.json

@@ -15,6 +15,7 @@
     "declarationDir": "./dist-typings",
     "paths": {
       "flarum/*": ["../../../framework/core/js/dist-typings/*"],
+      "@flarum/core/*": ["../../../framework/core/js/dist-typings/*"],
       "flarum/flags/*": ["../../flags/js/dist-typings/*"]
     }
   }