Fabric8 Maven Plugin deprecation

[manusa]

Description

Main goal of Eclipse JKube is to replace Fabric8 Maven Plugin.

Tasks

• [x] Deprecation notice -> Link to Eclipse JKube
• [ ] Review all open PRs
• [x] Add final deprecation notice
• [x] Create an intermediate release (Update all Mojos to at least print a final WARNING message with deprecation and link to Eclipse JKube)
  • #1426
  • https://github.com/fabric8io/fabric8-maven-plugin/releases/tag/v4.4.2
• [ ] Create a final release (x.x.x) that won't execute any goal unless a flag to ignore the project deprecation is provided (2023-01-21)
• [ ] ~Create final release (5.0.0) that automatically migrates users to JKube.~
• [ ] Provide solution to https://bugzilla.redhat.com/show_bug.cgi?id=1827201 by pointing to JKube release

Deprecation should be effective after a few months of notice announce.

[sunix]

Maybe what we can do is in the next release:

• fail when excuting one of the goals.
• display warnings about the problems with using fmp and provide different resolution options
• have a flag for user who still wants to use fmp that would reenable the goals.