Update dependencies and clean some old code

[K0rdan]

⚠ PLEASE DO NOT DELETE THE TEXT BELOW ⚠

Pull request's description

Miscellaneous changes in the structure of the repo

Checklist before merging (please do not edit)

You must review you work before to submit the review to others.

Self-review of your content

Remember the content must be readable and understandable by someone else than yourself.

• From a technical point of view.
• From a grammatical point of view (spelling mistakes, typos, clarity, etc.), and following the guidelines at the bottom.

External reviews of your content

• You requested a technical review.
• You requested a grammatical review.
• You validated with @K0rdan or @alexgeron-Luos that it is safe to merge.

Some guidelines to keep in mind

• Colons (:), semi-colons (;), exclamation (!), and interrogation points (?) are not preceded by a space (like full stops and commas). E.g.: Colons!

• File names and/or address are put in italic. E.g.: The file main.c.

• Functions, variables, or more generally short codes are put between grave accents. E.g.: To obtain code(), type `code()`.

• Long codes are put into blocks of code with three grave accent on each side, and the language's name:
  
  ```c
  
  // Some C language
  
  ```
  

• "Luos engine" has a upper case on the L for "Luos" and lower case on the e for "engine".

• We call it "Luos engine" as a proper name, and not "the Luos engine".

• Following that fashion, anything that's owned by "Luos engine" implies that we must use 's as the standard English rule to show the possessive case, e.g. "Luos engine's API".

• The names pipe, gate, inspector, sniffer, app or application, driver, etc. have a lower case and can be refereed with the determiner the. E.g.: The inspector.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated
documentation	✅ Ready (Inspect)	Visit Preview	May 30, 2022 at 7:56AM (UTC)

[K0rdan]

Following the latest changelog of Docusaurus : https://github.com/facebook/docusaurus/releases/tag/v2.0.0-beta.21

• Vercel configuration had to be changed to run on Node 16.x as described by chore: require Node 16.14 facebook/docusaurus#7501
• @lorenzi-nicolas you should have a look at : feat(sitemap): allow customizing the output name facebook/docusaurus#7469 it could introduce usefull features for SEO