feat(ui/frontend): add shortcuts for tools

[ShaunSHamilton]

Adds shortcuts to tools. Global event listener is added for the following keydown events:

Keys	Result
Ctrl + Alt + f	Rust Fmt on the code
Ctrl + Alt + m	Miri
Ctrl + Alt + x	Macro Expansion
Ctrl + Alt + c	Clippy

The above can easily be changed. However, certain combinations are reserved by different browsers.

What this looks like

I realise the background colour from the issue was probably for emphasis. So, am obviously happy to change/remove it.

Closes #844

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Aside: More ESLint/editor rules should be added, as I constantly needed to avoid saving with formatting.

[tgross35]

Could I suggest adding something like ctrl+alt+t to run tests? Helpful when you have both a main and #[test]s

[tgross35]

There's also https://github.com/rust-lang/rust-playground/issues/814 which suggested capturing ctrl+s to run the code. That's the current behavior of the monaco editor, but it could be good to capture it for the others