Add initial implementation of Hopfield and Hamming networks with web interface

- Create Dockerfile and entrypoint script for application setup
- Implement pattern loading from Excel and weight caching
- Develop core functions for Hopfield and Hamming networks
- Add Sinatra web server for user interaction
- Create HTML interface for displaying patterns and results
- Include necessary gems in Gemfile and lockfile
- Add .dockerignore and .gitignore files

.dockerignore

@@ -0,0 +1,5 @@
+vendor/
+.bundle/
+.claude/
+weights.cache
+*.xlsx