Add a button to a Project page to enable donating through Potlock

There is a library of components here: https://near.social/old.potlock.near/widget/Library
Github repo: https://github.com/PotLock/bos-app

Here is a sample button that donates to all projects in a Pot

https://near.social/mob.near/widget/WidgetSource?src=efiz.near/widget/PotlockDonateAll