BTHLABS-50: Safari Web extension

Co-authored-by: Tomek Wójcik <labs@tomekwojcik.pl>
Co-committed-by: Tomek Wójcik <labs@tomekwojcik.pl>

services/extension/assets/_locales/en/messages.json

@@ -0,0 +1,30 @@
+{
+  "extension_name": {
+    "message": "Save to HotPocket",
+    "description": "The display name for the extension."
+  },
+  "extension_description": {
+    "message": "Save to HotPocket. Straight from the toolbar!",
+    "description": "Description of what the extension does."
+  },
+  "extension_description_Safari": {
+    "message": "Save to HotPocket. Straight from Safari's toolbar!",
+    "description": "Description of what the extension does."
+  },
+  "content_popup_content_success_title": {
+    "message": "Saved!",
+    "description": "Title of the success content popup."
+  },
+  "content_popup_content_success_message": {
+    "message": "Your link has been saved!",
+    "description": "Message of the success content popup."
+  },
+  "content_popup_content_error_title": {
+    "message": "Oops!",
+    "description": "Title of the error content popup."
+  },
+  "content_popup_content_error_message": {
+    "message": "HotPocket couldn't complete this operation.",
+    "description": "Title of the error content popup."
+  }
+}