feat: Add pinging guidelines documentation

Christofer Chávez Carazasrequested to merge
chris/pinging-guidelines into master

Description

Add basic guidelines and recommendations about ping people in messages.

Supporting information

Private-ref: https://tasks.opencraft.com/browse/BB-10450

Testing instructions

  • build the docs, navigate to the new page
  • verify everything renders correctly
  • click all the links and verify they are all correct
  • verify accuracy of the information

Merge request reports