Update README.md

[ServiAmirPM]

Round 2 of updaing readme.

• fixed, designed and repositioned "Supported Feature" section
• Added dividers between features in features section
• added API column to the quantization methods table
• added links to relevant notebooks in relevant places
• made images of tasks (under results) a bit smaller
• Fixed Headers issue (some headers were in wrong level.)
• added more capabilities under debug feature - Xquant & network editor (including links to tutorial
• centered all section titles (makes the page more clean in my opinion)
• fixed according to review:
  -- - added tutorials to qadvanced quatntization & Quantization parameter search.
  -- - Updated EPTQ paper title and added E. Cohen as contributer
  -- - changed type (on the how to -> on how to)

Pull Request Description:

Checklist before requesting a review:

• I set the appropriate labels on the pull request.
• I have added/updated the release note draft (if necessary).
• I have updated the documentation to reflect my changes (if necessary).
• All function and files are well documented.
• All function and classes have type hints.
• There is a licenses in all file.
• The function and variable names are informative.
• I have checked for code duplications.
• I have added new unittest (if necessary).