Initial refactor of the documentation

[andrea-pasquale]

This PR does the following:

• Remove outdated sections in the doc.
• Sync doc with latest version of Qibolab
• Add all new protocols to the documentation
• Update developer instructions to facilitate the development of new protocols.
• Add scheme with available protocols

this is not definitive. It is just an initial refactor. More PRs will be opened after this one in order
to have a proper documentation.

Checklist:

• Reviewers confirm new code works as expected.
• Tests are passing.
• Coverage does not decrease.
• Documentation is updated.
• Compatibility with Qibo modules (Please edit this section if the current pull request is not compatible with the following branches).
  • Qibo: master
  • Qibolab: main
  • Qibolab_platforms_qrc: main

[codecov]

Codecov Report

Merging #485 (a80a40b) into main (5015685) will not change coverage.
Report is 33 commits behind head on main.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #485   +/-   ##
=======================================
  Coverage   95.95%   95.95%           
=======================================
  Files          61       61           
  Lines        4425     4425           
=======================================
  Hits         4246     4246           
  Misses        179      179           

Flag	Coverage Δ
unittests	95.95% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

[andrea-pasquale]

@Edoardo-Pedicillo could you please upload here the xmind diagram? (The SVG if it is ready)

[Edoardo-Pedicillo]

Thank @andrea-pasquale. If you have time, could you add an image of the report of the rotation protocol in the tutorial ?