Implement CI for the mobile platforms #539

Job	Run time
Formatter check	15s
Clippy check (android)	16s
Clippy check (ios)	1m 42s
Clippy check (ubuntu-latest)	46s
Clippy check (wasm32) (immutable_ctx)	45s
Clippy check (ubuntu-latest, manage_clipboard)	1m 18s
Check documentation	1m 27s
Clippy check (wasm32) (manage_clipboard)	40s
Clippy check (ubuntu-latest, open_url)	49s
Run tests	1m 57s
Clippy check (wasm32) (open_url)	45s
Clippy check (wasm32) (manage_clipboard,open_url)	44s
Clippy check (ubuntu-latest, manage_clipboard,open_url)	55s
Clippy check (macos-latest)	1m 28s
Clippy check (macos-latest, manage_clipboard)	1m 14s
Clippy check (macos-latest, open_url)	1m 0s
Clippy check (macos-latest, manage_clipboard,open_url)	1m 47s
Clippy check (windows-latest)	2m 24s
Clippy check (windows-latest, manage_clipboard)	2m 6s
Clippy check (windows-latest, open_url)	1m 56s
Clippy check (windows-latest, manage_clipboard,open_url)	2m 7s
	26m 21s

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