i18n setup (MetaMask#1251)

* i18n setup

* yarn.lock

* add crowdin.yml files

* fixes

* comment out language toggle

.github/workflows/crowdin.yml

@@ -0,0 +1,32 @@
+name: Crowdin Action
+
+on:
+  push:
+    path: [ "i18n/**" ]
+    branches: [ main ]
+
+permissions: write-all
+
+jobs:
+  crowdin:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Synchronize with Crowdin
+        uses: crowdin/github-action@v1
+        with:
+          upload_sources: true
+          upload_translations: true
+          download_translations: true
+          localization_branch_name: l10n_crowdin_translations
+
+          create_pull_request: true
+          pull_request_title: 'New Crowdin translations'
+          pull_request_body: 'New Crowdin pull request with translations'
+          pull_request_base_branch_name: 'main'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
+          CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}

crowdin.yml

@@ -0,0 +1,16 @@
+project_id_env: CROWDIN_PROJECT_ID
+api_token_env: CROWDIN_PERSONAL_TOKEN
+preserve_hierarchy: true
+files:
+  # JSON translation files
+  - source: /i18n/en/**/*
+    translation: /i18n/%two_letters_code%/**/%original_file_name%
+  # Docs Markdown files
+  - source: /wallet/**/*
+    translation: /i18n/%two_letters_code%/docusaurus-plugin-content-docs/**/%original_file_name%
+  - source: /snaps/**/*
+    translation: /i18n/%two_letters_code%/docusaurus-plugin-content-docs/**/%original_file_name%
+  - source: /services/**/*
+    translation: /i18n/%two_letters_code%/docusaurus-plugin-content-docs/**/%original_file_name%
+  - source: /docs/**/*
+    translation: /i18n/%two_letters_code%/docusaurus-plugin-content-docs/**/%original_file_name%

docusaurus.config.js

@@ -25,7 +25,7 @@ const config = {
   // to replace "en" with "zh-Hans".
   i18n: {
     defaultLocale: "en",
-    locales: ["en"],
+    locales: ["en"/*, "ru", "zh"*/],
   },
 
   trailingSlash: true,
@@ -426,6 +426,12 @@ const config = {
             label: "What's new?",
             position: "right",
           },
+          /* Language drop down
+          {
+            type: "localeDropdown",
+            position: "right",
+          },
+          */
         ],
       },
       docs: {