TIS 2.0: Token Importance Scoring Now Eliminates Position Bias in RAG

Well .. after some comments on this new version made by @John6666 on the original thread here, I have added some of the missing pieces of the new system, and also updated the documentation to show the correct numbers and new results from the latest experiments made!

I hope you users can find this useful enough and keep commenting on any missing code, checkpoints, models, documents, etc… Maybe I should just clean up a bit the working version, the one I use internally, and upload that instead, but the code and the documents are messier and cleaning them would be more hard work than just doing a cleaned release each time a major milestone is reached! :wink: