Update release workflows

[nagyesta]

Issue: N/A

Description

• Migrates to Setup Gradle action
• Adds Licensee for automatic dependency license verification
• Adds CycloneDX plugin to generate SBOMs
• Adds Nexus Publishing plugin to automatically close and release artifacts
• Includes legal files into the Jar artifacts
• Updates verification metadata

Entry point

Checklists

• I have rebased my branch
• My commit message is meaningful
• The commit messages use semantic versioning: {major}, {minor} or {patch}
• The changes are focusing on the issue at hand
• I have maintained or increased test coverage

Notes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.99%. Comparing base (587af02) to head (c574b21).

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #239      +/-   ##
============================================
+ Coverage     91.96%   91.99%   +0.02%     
- Complexity     1123     1124       +1     
============================================
  Files            96       96              
  Lines          3661     3661              
  Branches        251      251              
============================================
+ Hits           3367     3368       +1     
  Misses          214      214              
+ Partials         80       79       -1     

Flag	Coverage Δ
core	90.70% <ø> (+0.04%)	⬆️
job	96.78% <ø> (ø)
stream	92.16% <ø> (ø)

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