cpal

add Copy for SupportedStreamConfigRange #762

Job	Run time
cargo-publish	0s
android-apk-build	46s
asmjs-wasm32-test (asmjs-unknown-emscripten)	1m 7s
android-check	48s
asmjs-wasm32-test (wasm32-unknown-emscripten)	1m 10s
clippy-test	46s
ios-build	4m 48s
linux-check-and-test-armv7	3m 8s
macos-test	1m 35s
rustfmt-check	7s
ubuntu-test	36s
wasm32-bindgen-test (wasm32-unknown-unknown)	24s
wasm32-wasi-test (wasm32-wasi)	22s
wasm-beep-build	23s
windows-test (x86_64)	4m 3s
windows-test (i686)	3m 11s
	23m 14s

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