Hotkeys v2 with hooks

[adidahiya]

Fixes #3508, fixes #3604, fixes #3431, #2972, fixes #1590, fixes #3228, fixes #1028

Checklist

• Includes tests
• Update documentation

Changes proposed in this pull request:

• New hook useHotkeys
• New components <HotkeysProvider> and <HotkeysTarget2>
• Deprecated @HotkeysTarget

Reviewers should focus on:

Check out the new docs

Other notes

It is possible to programmatically show the hotkeys dialog but this is not documented:

import { HotkeysContext } from "@blueprintjs/core";
import { useContext, useEffect } from "react";

function MyComponent() {
  const [, dispatch] = useContext(HotkeysContext);
  useEffect(() => {
    dispatch({ type: "OPEN_DIALOG" });
  }, []);

  return <div />;
}

[blueprint-bot]

fix lint, drop test coverage

Previews: documentation | landing | table

[blueprint-bot]

fix compilation

Previews: documentation | landing | table