Add initial support for OpenHarmony #39

Job	Run time
Run `rustfmt`	12s
Build (macos-latest, stable, default)	56s
Build (macos-latest, stable, --features 'chains sm-raw-window-handle-06', default)	35s
Build (macos-latest, stable, --features 'chains sm-raw-window-handle-05', default)	36s
Build (ubuntu-22.04, stable, default)	26s
Build (ubuntu-22.04, stable, --features 'chains sm-raw-window-handle-06', default)	29s
Build (ubuntu-22.04, stable, --features 'chains sm-raw-window-handle-05', default)	29s
Build (windows-latest, stable, default)	38s
Build (windows-latest, stable, --features 'chains sm-raw-window-handle-06', default)	42s
Build (windows-latest, stable, --features 'chains sm-raw-window-handle-05', default)	42s
Build (ubuntu-22.04, --features 'sm-x11 sm-wayland-default', stable, default)	30s
Build (ubuntu-22.04, arm-linux-androideabi, stable)	26s
Build (windows-latest, --features 'chains sm-angle-builtin', stable, default)	5m 27s
Build (windows-latest, --features 'chains sm-no-wgl sm-angle-builtin', stable, default)	4m 53s
Build (windows-latest, aarch64-pc-windows-msvc, stable)	55s
Build (ubuntu-22.04, aarch64-unknown-linux-ohos, beta)	29s
Result	1s
	18m 26s

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