Add Docs languages zh, es, ru, pt, fr, de, ja, ko (#6316)

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

docs/build_docs.py

@@ -0,0 +1,77 @@
+# Ultralytics YOLO 🚀, AGPL-3.0 license
+"""
+This Python script is designed to automate the building and post-processing of MkDocs documentation, particularly for
+projects with multilingual content. It streamlines the workflow for generating localized versions of the documentation
+and updating HTML links to ensure they are correctly formatted.
+
+Key Features:
+- Automated building of MkDocs documentation: The script compiles both the main documentation and
+  any localized versions specified in separate MkDocs configuration files.
+- Post-processing of generated HTML files: After the documentation is built, the script updates all
+  HTML files to remove the '.md' extension from internal links. This ensures that links in the built
+  HTML documentation correctly point to other HTML pages rather than Markdown files, which is crucial
+  for proper navigation within the web-based documentation.
+
+Usage:
+- Run the script from the root directory of your MkDocs project.
+- Ensure that MkDocs is installed and that all MkDocs configuration files (main and localized versions)
+  are present in the project directory.
+- The script first builds the documentation using MkDocs, then scans the generated HTML files in the 'site'
+  directory to update the internal links.
+- It's ideal for projects where the documentation is written in Markdown and needs to be served as a static website.
+
+Note:
+- This script is built to be run in an environment where Python and MkDocs are installed and properly configured.
+"""
+
+import os
+import re
+import shutil
+from pathlib import Path
+
+DOCS = Path(__file__).parent.resolve()
+SITE = DOCS.parent / 'site'
+
+
+def build_docs():
+    """Build docs using mkdocs."""
+    if SITE.exists():
+        print(f'Removing existing {SITE}')
+        shutil.rmtree(SITE)
+
+    # Build the main documentation
+    print(f'Building docs from {DOCS}')
+    os.system(f'mkdocs build -f {DOCS}/mkdocs.yml')
+
+    # Build other localized documentations
+    for file in DOCS.glob('mkdocs_*.yml'):
+        print(f'Building MkDocs site with configuration file: {file}')
+        os.system(f'mkdocs build -f {file}')
+    print(f'Site built at {SITE}')
+
+
+def update_html_links():
+    """Update href links in HTML files to remove '.md'."""
+    html_files = SITE.rglob('*.html')
+    for html_file in html_files:
+        with open(html_file, 'r+', encoding='utf-8') as file:
+            content = file.read()
+            updated_content = re.sub(r'href="([^"]+)\.md"', r'href="\1"', content)
+            file.seek(0)
+            file.write(updated_content)
+            file.truncate()
+
+
+def main():
+    # Build the docs
+    build_docs()
+
+    # Update .md in href links
+    update_html_links()
+
+    # Show command to serve built website
+    print('Serve site at http://localhost:8000 with "python -m http.server --directory site"')
+
+
+if __name__ == '__main__':
+    main()