Initial commit: Simple Notes Sync project setup

Features:
- Docker WebDAV server with docker-compose
- Server configuration with .env
- Project structure for Android app
- Complete documentation references
- MIT License

Server:
- bytemark/webdav Docker image
- Basic authentication
- Port 8080 exposed
- Volume mounts for data and logs
- Quick start README

Android:
- Project structure defined
- README with setup instructions
- Links to complete implementation guide

Status: Server running and tested ✓
Next: Android app implementation in Android Studio

server/.gitignore

@@ -0,0 +1,9 @@
+# Environment
+.env
+
+# Data
+notes-data/
+logs/
+
+# Docker
+docker-compose.override.yml