feat: add MDARunner in `experimental` namespace #193

Job	Run time
Check Manifest	13s
test (macos-latest, 3.11) / macos-latest py3.11	26s
test (macos-latest, 3.9) / macos-latest py3.9	33s
test (macos-latest, 3.12) / macos-latest py3.12	29s
test (macos-latest, 3.13) / macos-latest py3.13	25s
test (ubuntu-latest, 3.11) / ubuntu-latest py3.11	24s
test (ubuntu-latest, 3.12) / ubuntu-latest py3.12	26s
test (ubuntu-latest, 3.13) / ubuntu-latest py3.13	32s
test (ubuntu-latest, 3.9) / ubuntu-latest py3.9	23s
test (windows-latest, 3.10) / windows-latest py3.10	47s
test (windows-latest, 3.11) / windows-latest py3.11	1m 9s
test (windows-latest, 3.12) / windows-latest py3.12	54s
test (windows-latest, 3.13) / windows-latest py3.13	1m 20s
test (windows-latest, 3.9) / windows-latest py3.9	56s
test-dependents (pymmcore-plus/pymmcore-plus, pyqt6) / macos-13 py3.11	2m 22s
test-dependents (pymmcore-plus/pymmcore-widgets, pyqt6) / macos-13 py3.11	2m 19s
test-minreqs (3.9) / ubuntu-latest py3.9	28s
test-minreqs (3.12) / ubuntu-latest py3.12	25s
deploy	0s
upload_coverage / Upload coverage	10s
	14m 41s

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