Unroll loops inside kernels at compile time

[sbaldu]

NOTE: this currently shows a speedup on GPU but a moderate decrease of CPU performance

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.01%. Comparing base (1db729d) to head (ebbb3a8).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #299   +/-   ##
=======================================
  Coverage   90.01%   90.01%           
=======================================
  Files          74       74           
  Lines        3075     3075           
  Branches       89       82    -7     
=======================================
  Hits         2768     2768           
  Misses        307      307           

Flag	Coverage Δ
unittests	90.01% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...lude/CLUEstering/core/detail/ClusteringKernels.hpp	100.00% <100.00%> (ø)
...CLUEstering/data_structures/internal/TilesView.hpp	100.00% <100.00%> (ø)

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.