Adding new recipes for Encore, Stimulus & AssetMapper (#1202)

* Adding new recipes for Encore, Stimulus & AssetMapper

* StimulusBundle 1.0 -> 2.9

* updating namespace

* moving encore recipe changes to 2.0

* conflict with older version of flex

* adding ux_controller_link_tags() to recipe

* adding documentation to importmap

* updating message to match core

* Adding ux translator

* fixing translations path

* Documenting the new add-lines configurator

* Fixing translator initial version

* shorten to just var

* remove ux alias - there is no one package to install UX packages currently

* fixing wrong package name

symfony/asset-mapper/6.3/importmap.php

@@ -0,0 +1,21 @@
+<?php
+
+/**
+ * Returns the import map for this application.
+ *
+ * - "path" is a path inside the asset mapper system. Use the
+ *     "debug:asset-map" command to see the full list of paths.
+ *
+ * - "preload" set to true for any modules that are loaded on the initial
+ *     page load to help the browser download them earlier.
+ *
+ * The "importmap:require" command can be used to add new entries to this file.
+ *
+ * This file has been auto-generated by the importmap commands.
+ */
+return [
+    'app' => [
+        'path' => 'app.js',
+        'preload' => true,
+    ],
+];