Move CAA provider type selector code to its own file #4110

Job	Run time
package-macos (10.12, 3.9.12-macosx10.9, 7888174c6fe441b00448c7ab3e9cbf0e6c3c7dea0750577baf09e138...	5m 1s
package-macos (10.14, 3.11.5-macos11, c6cd76659bfb364c2ac63bc57f6b10c1e131a20170359c5d65e2d41fdc6...	4m 49s
package-windows (store-app)	3m 6s
package-windows (signed-app)	1m 21s
package-windows (installer)	4m 12s
package-windows (portable)	4m 6s
package-pypi / pypi-bdist (macos-11, 3.7)	1m 21s
package-pypi / pypi-bdist (macos-11, 3.8)	1m 11s
package-pypi / pypi-bdist (macos-11, 3.9)	1m 21s
package-pypi / pypi-bdist (macos-11, 3.10)	1m 13s
package-pypi / pypi-bdist (macos-11, 3.11)	1m 21s
package-pypi / pypi-bdist (macos-11, 3.12.0-rc.1)	2m 55s
package-pypi / pypi-bdist (windows-2019, 3.7)	1m 56s
package-pypi / pypi-bdist (windows-2019, 3.8)	1m 59s
package-pypi / pypi-bdist (windows-2019, 3.9)	1m 44s
package-pypi / pypi-bdist (windows-2019, 3.10)	1m 54s
package-pypi / pypi-bdist (windows-2019, 3.11)	2m 5s
package-pypi / pypi-bdist (windows-2019, 3.12.0-rc.1)	3m 12s
package-pypi / pypi-sdist	48s
github-release	0s
	45m 35s

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