feat: Add CPU features detection and stretched grid API (Phase 6) #127

Job	Run time
Build cpu wheel on windows-latest	1m 24s
Build cpu wheel on ubuntu-latest	43s
Build cuda wheel on ubuntu-latest	1m 42s
Build cpu wheel on macos-latest	57s
Build cuda wheel on windows-latest	10m 26s
Test cpu wheel on macos-latest with Python 3.9	34s
Test cpu wheel on ubuntu-latest with Python 3.9	17s
Test cpu wheel on windows-latest with Python 3.13	39s
Test cuda wheel on ubuntu-latest with Python 3.13	39s
Test cuda wheel on ubuntu-latest with Python 3.9	33s
Test cuda wheel on windows-latest with Python 3.9	13m 47s
Test cpu wheel on ubuntu-latest with Python 3.13	14s
Test cpu wheel on windows-latest with Python 3.9	39s
Test cpu wheel on macos-latest with Python 3.13	16s
Test cuda wheel on windows-latest with Python 3.13	9m 20s
	42m 10s

Provide feedback