Add expand/compress image button on image view box (#15068)

* add zoom image button

* enhance zoom algorithm & add translation

* code structure

* code structure

* code structure

* enhance grab performance

* rm useless state

* fix behavior on Firefox & scroll lock & horizontal scroll with mousewheel

* remove scroll lock on MouseWheelEvent

* code structure

* enhance algorithm and code structure

* rm Gemfile.lock from tree

* codeclimate

* fix a stupid mistake

app/javascript/mastodon/locales/defaultMessages.json

@@ -3201,6 +3201,19 @@
     ],
     "path": "app/javascript/mastodon/features/ui/components/video_modal.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "Compress image view box",
+        "id": "lightbox.compress"
+      },
+      {
+        "defaultMessage": "Expand image view box",
+        "id": "lightbox.expand"
+      }
+    ],
+    "path": "app/javascript/mastodon/features/ui/components/zoomable_image.json"
+  },
   {
     "descriptors": [
       {
@@ -3259,4 +3272,4 @@
     ],
     "path": "app/javascript/mastodon/features/video/index.json"
   }
-]
+]