[WIP] Update README to provide more Why than HOW.

[cowboyd]

Rendered

The README does a decent job of explaining HOW, but doesn't do a good job of explainin WHY. WHY is definitely there in the mix, but it isn't the primary motivator.

To address this, I changed the wording to focus around individuals (not the Frontside "we") and the problems they face which are solved by Frontmacs.

TODOS

• [ ] Add Sectional Breakdown of which packages and how they're implemented
• [ ] Add some screenshots.

[sadatay]

Very nice 👍