Add cosmic text example #1778

Job	Run time
cargo check (aarch64-android)	20s
cargo check (msrv) (windows-latest)	1m 41s
cargo clippy (windows-latest)	2m 22s
cargo check (msrv) (macos-latest)	41s
cargo check (msrv) (wasm32)	44s
cargo clippy (macos-latest)	1m 22s
cargo clippy (wasm32)	1m 35s
cargo check (msrv) (ubuntu-latest)	45s
cargo clippy (ubuntu-latest)	1m 59s
cargo doc	23s
formatting	23s
cargo test (wasm32)	27s
Prime LFS Cache	8s
typos	5s
cargo test (windows-latest)	1m 35s
cargo test (macos-latest)	4m 10s
cargo test (ubuntu-latest)	2m 57s
	21m 37s

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