Add the initial superintelligence flywheel manifesto (#16769)

* Add the initial superintelligence flywheel manifesto

* Add flywheel image

* Fix broken links

* Center the main thesis

* Improve image

* Incorporate some CR feedback

* Additional CR refinements

* Additional updates

* Make some more improvements

* Tweaks; meta image

* Rename the directory

* New meta image

Author: joeduffy