parley: add IME support to text editor example #278

Job	Run time
cargo check (msrv) (android) (armv7-linux-androideabi)	23s
cargo check (msrv) (android) (aarch64-linux-android)	35s
cargo check (msrv) (android) (x86_64-linux-android)	37s
cargo check (msrv) (windows-latest)	1m 11s
cargo clippy (android) (armv7-linux-androideabi)	48s
cargo doc (windows-latest)	1m 59s
cargo check (msrv) (macos-latest)	27s
cargo clippy (android) (aarch64-linux-android)	1m 14s
cargo clippy (windows-latest)	2m 1s
cargo doc (macos-latest)	52s
cargo check (msrv) (ubuntu-latest)	24s
cargo clippy (android) (x86_64-linux-android)	1m 14s
cargo clippy (macos-latest)	46s
cargo doc (ubuntu-latest)	58s
cargo clippy (ubuntu-latest)	48s
cargo fmt	24s
typos	8s
cargo test (windows-latest)	1m 21s
cargo test (macos-latest)	27s
cargo test (ubuntu-latest)	28s
	17m 5s

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