recursively organize files in a directory using semantics

• Organize files into dedicated folders using file extensions
• Organize files semantically using Jaccard indexing
• Organize files semantically using cosine similarity of FastText embedding vectors

Uses the crawl-300d-2M pre-trained model

• Converted models to the finalfusion format to speed up loading
• Load models on initialization using finalfusion with memory-mapping (199s -> 2s)
• Used 'rayon' to parallelize certain stages of the semantic organization pipeline