v2.0-beta6: Major HF-Waitress LLM Server Update

• HF-Waitress: /completions_stream now implements custom TextStreamer so as to redirect only it's output to the stream buffer, while STDOUT remains unmodified thus allowing other non-blocked routes and methods to execute and output to STDOUT in parallel without interfering with the stream

• CSS separated into a dedicate file

• Minor QoL changes

Full Changelog: v2.0-beta5...v2.0-beta6