Revisit docs contents

[BalzaniEdoardo]

Overview of the documentation refactoring plan:

• Home: hyperlinks to some other references.
• Quickstart: See issue Move Overview Chapter of index.md to quickstart.md #220
• Install
• Background: Theory focus, introduce GLM, convolution, basis. See Refactor Background #176
• How-to-Guide: Assume background knowledge, show in depth what you can do with our functions
  • Model temporal effects with basis
  • Model fix non linearities with basis
  • Model multiple inputs
  • Take full advantage of pynapple & NeMoS
  • Regularization: types and when to use them
  • Model selection with sklearn
  • Fit large datasets
• Tutorials: Fully worked out neural examples. Goal: teach good data analysis practices
• API Guide: Assume background knowledge. Explanation of all functions and methods, and their parameters with minimal examples. See issue Add examples to all user-facing docstrings #177
• For Developers: note facilitating new contributors explaining the internals of NeMoS machinery