Allow multiple funders to be listed on a hub homepage

[sgibson91]

Context

We have a field where we can provide the name and link of a funder that provides financial support for a hub. However, some communities may have funding from multiple sources that they may wish to acknowledge, e.g.:

• [New Hub] NASA Cryo Community -- Cryosphere Community Hub infrastructure#1702

Proposal

I propose we move from the current config that only allows us to list a single funder, to a config that would allow us to list multiple

Current config example:

funded_by:
  name: Funder 1
  url: https://www.funder1.org/

Proposed config example (make funded_by an array type):

funded_by:
  - name: Funder 1
    url: https://www.funder1.org/
  - name: Funder 2
    url: https://funder2.com

Updates and actions

• There will need to be some exploration on how to best display multiple funders in terms of the HTML