Updated the README to clarify the functionality of Supermemory and modified links for Discord and user setup. Added information about the Supermemory App and its plugins.
This PR updates the README with several improvements:
- Added a light/dark mode compatible logo using the `<picture>` element
- Added a tagline: "Your AI second brain for saving and organizing everything that matters"
- Added badges for Web App, Chrome Extension, and Raycast Extension
- Added a developer resources section with links to the Developer Console and Documentation
- Added detailed sections for the Browser Extension and Raycast Extension features
- Fixed minor typos and grammar issues
- Updated all screenshots with newer versions
- Added a new logo-light-fullmark.svg file for light mode display
- Removed the "Quick Start for Contributors" section as it's covered in the [CONTRIBUTING.md](http://CONTRIBUTING.md)
### Relocated logo file and removed unnecessary configuration files.
### What changed?
- Moved `logo.svg` to `apps/web/public/logo-fullmark.svg`
- Updated the logo path in `README.md` to reflect the new location
- Removed empty `.npmrc` file
- Removed `apps/web/public/_headers` file that contained Next.js static caching configuration
