Styling support for Drupal.org

For reference, here is what @jrockowitz has put together for the excellent Webform module page: screnshot of contributor avatars on current webform project page

Interestingly, I don't think there's a way to show the code maintainers from OpenCollective right now - I do believe Jacob's choice to put a human face on the code is an excellent one.

Second, there is something like the UX for "Github Sponsors" - to open this popup you have to click a button with a pink heart that says "Sponsor" and this popup appears. Here is a sample from Parcel JS, an early adopter of Github Sponsors who use Open Collective:
screenshot of github sponsors modal dialog for parcel.js project

I want to return to a small thing Jacob did on the webform page, just below the photos of the contributors:

I feel like this block is something that is generic enough to be included but still able to be customized on different sites that want to use this project (other than Drupal.org).

We could have some configuration in the field widget that allows an administrator to have some text (maybe with token replacement) that allows the webmaster to configure a string similar to this, and the icon here can come from the theme or maybe create a default graphic that can be included in a GPL manner.

Next comment will have some of my ideas on what this might actually look like.

NOTE: the screenshots in this comment are mockups. Above are actual pages.

If we look at what is available from OpenCollective today, it leaves something to be desired. A module maintainer could list each of their backer teirs as SVGs, like so:

But a more practical and universal example would look more like the green box from the webform page. One possible location is under the "Project Information" heading:

I'm suggesting my screenshot from #3 as a Minimum Viable Product. Since a custom field type can have many formatters, we can configure different formatters for users who want to do something like an embedded donation flow. If D.o wants this flow, so be it. I'd like to build the text-only version.

@hestenet I have completed the initial code for the funding "text box" variant - currently no modal dialogs or expandable areas, etc. I feel like to finish the D.o experience you said we would need to create some configs, features, maybe styles. We should cover the next steps.

Composer support is real via the `composer fund` command and packagist.org:

See https://packagist.org/packages/symfony/symfony for an example.

I am looking for examples of projects that are currently listing their funding profiles - adding to the issue description.

Some new developments from OpenCollective:
https://docs.opencollective.com/help/collectives/embed-contribution-flow

They developed an embeddable widget, and there is a default funding level, simply called "Donate" which simplifies the membership types greatly.

Updated Screenshot for Webform:

and Gin, as mentioned by Rachel:

Updating planning issue versions to the Drupal 9+ branch.