[RFC]: Rework development docs home page

[alexmerlin]

RFC

Rework current home page containing irrelevant information to show useful stuff.

Q	A
Proposed Version(s)	x.y.0
BC Break?	Yes/No

[alexmerlin]

Suggestion:

We should move content from /v1/introduction/ and /v2/introduction/ to each version's home page, replacing the current content shown in the issue description:

• Texts and images used in the pages are open for discussion.

[arhimede]

should we add in the Support box a link to discussion too ?
https://github.com/orgs/dotkernel/discussions

[alexmerlin]

Implemented in #83 for AL9 and f2a51dc for AL10