Add TMDBExtractor class for movie information extraction

- Implement TMDBExtractor to fetch movie details from The Movie Database (TMDB) API.
- Include caching mechanism for API responses to reduce redundant requests.
- Extract movie database ID from filenames using regex patterns.
- Add methods to extract TMDB ID, title, original title, release year, and TMDB URL.
- Create secrets.py to store TMDB API key and access token.
- Add a sample MKV file for testing purposes.

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "renamer"
-version = "0.3.3"
+version = "0.4.1"
 description = "Terminal-based media file renamer and metadata viewer"
 readme = "README.md"
 requires-python = ">=3.11"
@@ -11,6 +11,7 @@ dependencies = [
     "pymediainfo>=6.0.0",
     "pytest>=7.0.0",
     "langcodes>=3.5.1",
+    "requests>=2.31.0",
 ]
 
 [project.scripts]