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

Gemfile

@@ -0,0 +1,8 @@
+source 'https://rubygems.org'
+
+gem 'roo'
+gem 'rubyXL'
+gem 'sinatra'
+gem 'sinatra-contrib'
+gem 'rackup'
+gem 'webrick'