refactor: split `dirs` module into a separate crate #978

Job	Run time
Build and Test (no default features) (ubuntu-latest, core_installer)	1m 21s
Cross Build to aarch64 (ubuntu-latest)	2m 46s
Build and Test (no default features) (ubuntu-latest, git2)	1m 29s
Build and Test (ubuntu-latest)	1m 15s
Build and Test (no default features) (macos-14, core_installer)	1m 33s
Build and Test (macos-12)	1m 50s
Build and Test (maa-sys, static) (ubuntu-latest)	46s
Build and Test (macos-14)	1m 24s
Build and Test (no default features) (macos-14, git2)	1m 39s
Build and Test (maa-sys, static) (macos-12)	36s
Build and Test (windows-latest)	4m 16s
Build and Test (no default features) (windows-latest, core_installer)	3m 32s
Build and Test (maa-sys, static) (macos-14)	20s
Build and Test (no default features) (windows-latest, git2)	3m 20s
Build and Test (maa-sys, static) (windows-latest)	1m 40s
Coverage (ubuntu-latest)	1m 2s
Coverage (macos-14)	1m 24s
Coverage (windows-latest)	4m 16s
	34m 29s

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