Updated README asset URL
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### What?
Update README asset URL for hero
### Why?
Reflect latest Payload branding
### How?
URL change for correct asset
-->
* Update README.md
- updates logo approach to work with npm and github
- updates badge style
- fixes twitter badge
- removes duplicative links for discord and website
- moves feature request link
* changes h1 to p tag, changes h2 to h3 - both done to remove ugly bottom border
* adds target blank to a few anchor tags
* chore: README header logo
* updates conditionally rendered logo for light/dark mode
* adds img folder with light and dark logos to utilize gh conditional
* moves payload logos to avoid polluting root directory
Co-authored-by: Sean Zubrickas <zubricks@gmail.com>
* refines readme banner image, badges and headings
* chore: spruce up README a bit more
* adds dark/light mode support for logo
Co-authored-by: Elliot DeNolf <denolfe@gmail.com>
