Make the playground run in other pages, and start of a workbench page

[orta]

After thinking about it for a bit, getting to something like this:

Re: microsoft/TypeScript#35389

Would either mean:

• taking the sandbox and wrapping it with a custom sidebar infrastructure
• taking the playground and allowing for custom sidebar plugins

The choice ended up being pretty easy in the end, so the playground now supports custom sets of plugins - which is how this is implemented

Result of this PR:

https://typescript-v2-497.ortam.now.sh/dev/bug-workbench/

[orta]

and it sets up prettier correctly everywhere too

[github-actions]

	Messages
📖	Deployed to a PR branch - playground tsconfig old handbook

Got false positives?

Make changes to the global settings spellcheck.json in /artsy/peril-settings.

Typos for CONTRIBUTING.md

Line	Typo
1	### How to make a change in Twoslash
3	t's likely you have a failing twoslash test case, copy that into `te

Typos for CHANGELOG.md

Line	Typo
26	y to set the defaults for the config
30	Initial public version of Twoslash. Good enough for using on the

Typos for README.md

Line	Typo
1	# TypeScript TwoSlash
4	by the [fourslash test system](https://github.c
9	You can preview twoslash on the TypeScript website her
11	### What is Twoslash?
14	twoslash to let the compiler handle er
67	ching this code sample to use twoslash has a few upsides:
70	e sample, if it doesn't occur twoslash throws
73	it more verbose because every twoslash example is a unique compiler
77	The Twoslash markup language helps with:
82	cing code with the results of transpilation to different files, or ancill
82	les, or ancillary files like .d.ts or .map files
90	The twoslash markup API lives inside your
117	Finally you can set any tsconfig compiler flag using this synt
608	ebug logs by running with the env var of DEBUG="*".
616	is optimized and bundled with Rollup into multiple formats (Common
616	Rollup into multiple formats (CommonJS, UMD, and ES Module).

Generated by 🚫 dangerJS against 13a7853

[orta]

Got all the infra hooked up - looks like a bug with grabbing the queries locations - (I bet its an offset thing, but I'm ok to ship without)

[orta]

Cool, this is good enough for a few of my bugs - will expand it out in time