Add funding field (v5)

[bjohansebas]

Express now has an Open Collective, it would be good to add this field.

Related: expressjs/discussions#228

[wesleytodd]

I was reviewing the changes in the proposed 5.0.2 and noticed this. I am wondering if this was done too soon? We dont have a plan for what we are doing with this money and this will start advertising to people as soon as this goes out. I am not sure it is an issue, but seeing this land so quickly without much discussion I would just like to flag this to the rest of the @expressjs/express-tc in case anyone is opposed.

This will now show in the post install logs, and then direct folks to our OC. Bringing attention to the page which is not really even fully setup yet. (EDIT: has the entire TC actually logged in and accepted the invite @sheplu sent out? EDIT 2: I see so here: https://opencollective.com/express#category-ABOUT)

I am a BIG fan of this in general, and would not have blocked this. But I think that we probably should have left this open for longer and explicitly tagged the TC in it before we merged. Just to make sure anyone who may have an issue with this going directly to end users had a chance to say something. Always better with things around funding to go slow and steady imo.

[wesleytodd]

I believe folks have generally agreed we are alright to start promoting this. We have a small proposal for wording about what we might allow spending any money collected on, and I will ask if we are good to post that outside of the slack today. Hopefully we are then good to just charge forward with promoting it.