🌎 i18n: React-i18next & i18next Integration (#5720)

* better i18n support an internationalization-framework.

* removed unused package

* auto sort for translation.json

* fixed tests with the new locales function

* added new CI actions from locize

* to use locize a mention in the README.md

* to use locize a mention in the README.md

* updated README.md and added TRANSLATION.md to the repo

* updated TRANSLATION.md badges

* updated README.md to go to the TRANSLATION.md when clicking on the Translation Progress badge

* updated TRANSLATION.md and added a new issue template.

* updated TRANSLATION.md and added a new issue template.

* updated issue template to add the iso code link.

* updated the new GitHub actions for `locize`

* updated label for new issue template --> i18n

* fixed type issue

* Fix eslint

* Fix eslint with key-spacing spacing

* fix: error type

* fix: handle undefined values in SortFilterHeader component

* fix: typing in Image component

* fix: handle optional promptGroup in PromptCard component

* fix: update localize function to accept string type and remove unnecessary JSX element

* fix: update localize function to enforce TranslationKeys type for better type safety

* fix: improve type safety and handle null values in Assistants component

* fix: enhance null checks for fileId in FilesListView component

* fix: localize 'Go back' button text in FilesListView component

* fix: update aria-label for menu buttons and add translation for 'Close Menu'

* docs: add Reasoning UI section for Chain-of-Thought AI models in README

* fix: enhance type safety by adding type for message in MultiMessage component

* fix: improve null checks and optional chaining in useAutoSave hook

* fix: improve handling of optional properties in cleanupPreset function

* fix: ensure isFetchingNextPage defaults to false and improve null checks for messages in Search component

* fix: enhance type safety and null checks in useBuildMessageTree hook

---------

Co-authored-by: Danny Avila <danny@librechat.ai>

.github/workflows/locize-pull-published-sync-pr.yml

@@ -0,0 +1,53 @@
+name: Locize Version Published Workflow
+
+on:
+  push:
+    branches: [main]
+  repository_dispatch:
+    types: [locize/versionPublished]
+
+jobs:
+  locize_update:
+    name: Process Locize Version Published Event
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Display Dispatch Payload
+        run: |
+          echo "Received Version: ${{ github.event.client_payload.payload.version }}"
+          echo "Full Payload: ${{ toJson(github.event.client_payload) }}"
+      - name: Download Translations from locize
+        uses: locize/download@v1
+        with:
+          project-id: ${{ secrets.LOCIZE_PROJECT_ID }}
+          version: ${{ github.event.client_payload.payload.version }}
+          path: "client/src/locales"
+          path-mask: "{{language}}/{{namespace}}"
+          clean: true # Ensures old translation files are removed before downloading new ones
+
+      - name: Create Pull Request
+        id: create_pr
+        uses: peter-evans/create-pull-request@v7.0.6
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: "chore: update translations from locize"
+          branch: locize-update-${{ github.event.client_payload.payload.version }}
+          delete-branch: true
+          title: "chore: update translations from locize"
+          body: |
+            This PR updates translations from locize.
+            - Version: `${{ github.event.client_payload.payload.version }}`
+            - Automated update from GitHub Actions
+          labels: "translations, automated"
+          draft: false
+
+      - name: Check PR Outputs
+        if: steps.create_pr.outputs.pull-request-number
+        run: |
+          echo "Pull Request Number - ${{ steps.create_pr.outputs.pull-request-number }}"
+          echo "Pull Request URL - ${{ steps.create_pr.outputs.pull-request-url }}"

.github/workflows/locize-push-missing-keys.yml

@@ -0,0 +1,26 @@
+name: Push New Keys to locize
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  push-new-keys:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Set Up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install locize CLI
+        run: npm install -g locize-cli
+
+      - name: Push Missing Translation Keys to locize
+        run: |
+          cd client/src/locales
+          locize save-missing --api-key ${{ secrets.LOCIZE_API_KEY }} --project-id ${{ secrets.LOCIZE_PROJECT_ID }} --language en