Configurable Awesome Processes homepage content block

[antopalidi]

Fixes #509

• Added new homepage block awesome_processes with flexible filtering and manual selection.
• Implemented mixed mode (all) as real interleaving of processes and groups.
• Switched process ordering to weight ASC; preserved manual selection order.
• Added safety for negative max_results (clamped to 0).
• Added admin UI dynamics: show/hide manual select and mixed-mode helper text.
• Added tests for registration, query logic, UI behavior, and system flows.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.84%. Comparing base (9ce4aca) to head (029feec).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #518      +/-   ##
==========================================
+ Coverage   92.35%   96.84%   +4.49%     
==========================================
  Files         166      169       +3     
  Lines        4250     4376     +126     
==========================================
+ Hits         3925     4238     +313     
+ Misses        325      138     -187     

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[microstudi]

Great Job @antopalidi just remove the part that only processes with hero images are returned!

[microstudi]

Fantastic work