Add Section for FFK on Homepage

[BitcoinBrief]

Create a new section summarizing FFK with links to repo and fundsolvr issues.

Add to projects we support section at the front?

Create its own page with the full project overview?

[BitcoinBrief]

Add FFK to project section with link to repo.

Logo (ugly, but we can update!):

Description:

"The Foundation Formation Kit (FFK) is a set of tools provided by OSJF to increase access to tax-advantaged, non-profit structures for open-source projects of all sizes. With easy to use forms, instructions, and even a webapp, the FFK will transform the open-source industry into a robust ecosystem of non-profits, accelerating capital allocation and supporting the development of open-source technologies and protocols."