parley: add IME support to text editor example #277

Job	Run time
cargo clippy (windows-latest)	1m 58s
cargo clippy (android) (armv7-linux-androideabi)	43s
cargo clippy (macos-latest)	43s
cargo check (msrv) (android) (armv7-linux-androideabi)	24s
cargo clippy (android) (aarch64-linux-android)	1m 12s
cargo clippy (ubuntu-latest)	48s
cargo check (msrv) (windows-latest)	55s
cargo check (msrv) (android) (aarch64-linux-android)	35s
cargo check (msrv) (macos-latest)	27s
cargo clippy (android) (x86_64-linux-android)	1m 15s
cargo check (msrv) (android) (x86_64-linux-android)	34s
cargo check (msrv) (ubuntu-latest)	32s
cargo doc (windows-latest)	2m 2s
cargo doc (macos-latest)	51s
cargo fmt	23s
cargo doc (ubuntu-latest)	1m 1s
cargo test (windows-latest)	1m 44s
typos	4s
cargo test (macos-latest)	40s
cargo test (ubuntu-latest)	34s
	17m 25s

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