Create CursorTest harness #746

Job	Run time
cargo check (msrv) (windows-latest)	1m 5s
cargo check (msrv) (android) (armv7-linux-androideabi)	24s
cargo check (msrv) (macos-latest)	29s
cargo clippy (windows-latest)	27s
cargo clippy (android) (armv7-linux-androideabi)	28s
cargo check (msrv) (android) (aarch64-linux-android)	40s
cargo check (msrv) (ubuntu-latest)	23s
cargo clippy (macos-latest)	34s
cargo clippy (android) (aarch64-linux-android)	42s
cargo check (msrv) (android) (x86_64-linux-android)	44s
cargo clippy (ubuntu-latest)	24s
cargo clippy (android) (x86_64-linux-android)	41s
cargo doc (windows-latest)	2m 18s
cargo doc (macos-latest)	1m 8s
formatting	22s
typos	5s
cargo test (windows-latest)	2m 24s
cargo doc (ubuntu-latest)	1m 13s
cargo test (macos-latest)	34s
cargo test (ubuntu-latest)	36s
	15m 41s

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