coretext: Get `CFRange` from `core-foundation` #29

Job	Run time
cargo check (msrv) (android) (armv7-linux-androideabi)	43s
cargo check (msrv) (windows-latest)	1m 46s
cargo check (msrv) (android) (aarch64-linux-android)	41s
cargo clippy (windows-latest)	1m 34s
cargo clippy (android) (armv7-linux-androideabi)	48s
cargo check (msrv) (macos-14)	49s
cargo check (msrv) (android) (x86_64-linux-android)	42s
cargo clippy (macos-14)	55s
cargo check (msrv) (ubuntu-latest)	46s
cargo clippy (android) (aarch64-linux-android)	46s
cargo clippy (ubuntu-latest)	52s
cargo clippy (android) (x86_64-linux-android)	48s
cargo doc (windows-latest)	1m 35s
cargo fmt	21s
cargo test (windows-latest)	1m 22s
cargo doc (macos-14)	32s
cargo doc (ubuntu-latest)	26s
cargo test (macos-14)	45s
cargo test (ubuntu-latest)	33s
	16m 44s

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