docs: Made storybook docs available again, small org changes elsewhere

[werdnanoslen]

Summary

The latest update to storybook saw a "feature" moving docs from a consistent tab to a new page for each component. The main change here changes .storybook/main.ts to make that available for all pages and modifies the global storybook[-docs] params to use the right fonts. However, we don't want the docs treatment for the welcome page, so I refactored that as a .mdx file, so now that appears as it did before with the benefit it being much simpler markdown file. This also required the Templates folder to be flattened, as the sub-folder Authentication Pages could only have one docs page.

I also moved the Link out of its lonely Typography folder and the TimePicker out of its deprecated form controls folder

Related Issues or PRs

None

How To Test

Check that all components and template pages have the same docs as before, just in a page instead of a tab

Screenshots (optional)

[github-actions]

	Warnings
⚠️	This PR does not include changes to tests, even though it affects source code.

Generated by 🚫 dangerJS against e27a5e1

[AnnaGingle]

Looks good to me!

[gidjin]

LGTM

[sawyerh]

@werdnanoslen Hey there, did this go live? I'm not seeing the Docs on components like Textarea:

[werdnanoslen]

@sawyerh It did, but then our Github Actions broke 🙃 . We're working that out now in #2843