Enhance caching mechanism and logging configuration

- Updated .gitignore to include additional IDE and OS files, as well as log and web build directories.
- Expanded config.sample.yaml to include cache configuration options for memory and Redis.
- Modified wallamonitor.py to load cache configuration and initialize ArticleCache.
- Refactored QueueManager to utilize ArticleCache for tracking notified articles.
- Improved logging setup to dynamically determine log file path based on environment.

web/frontend/postcss.config.js

@@ -0,0 +1,7 @@
+export default {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+}
+