Updating feature prioritization critieria & remove 💝 Customer requests (prioritized) project

[noahtalerman]

• Updating feature prioritization criteria
  • Use P- labels for high-priority customer requests
• Remove 💝 Customer requests (prioritized) project: From a Product Design perspective, I think we get little to no value from maintaining that project.
  • @noahtalerman: I'm also going to delete the ~customer request label. That's the label we used to put issues on this project.

[noahtalerman]

FYI @marko-lisica @melpike @rachaelshaw

[noahtalerman]

• Updating feature prioritization criteria
  • Use P- labels for high-priority customer requests

FYI @zayhanlon @lukeheath