Mention F1's Inspect Tokens in Monarch docs

[JoshuaKGoldberg]

I'm trying to target different syntax trivia in custom themes and finding it difficult to tell which trivia classes map to what. This HTML in development corresponds to some C++ code:

<span>
  <span class="mtk12">int</span>
  <span class="mtk1">&nbsp;main</span>
  <span class="mtk17">()</span>
  <span class="mtk1">&nbsp;</span>
  <span class="mtk17">{</span>
</span>

It'd be useful when developing to, maybe:

• Medium? size: surface what token types the classes such as mtk12 map to
• Large? size: provide some kind of astexplorer.net-style visualizer for tokens parsed from text

Is there some way this experience could be made better? 🙏

[alexdima]

Have you tried F1 > Developer: Inspect Tokens?

[JoshuaKGoldberg]

😭 @alexdima this is amazing, thank you! I pored over the monarch.html docs and had no idea this existed.

Updating the title of this issue to reflect a real request: can this be mentioned in the docs? 🙏

[alexdima]

@JoshuaKGoldberg 👍 Sorry about that!

Would you please like to create a PR to document it?