Update "Standard" GitHub Labels to Latest? (add "good first issue")

[nelsonic]

GitHub has recently updated their standard set of labels
e.g: https://github.com/nelsonic/phoenix-chat-example/labels

(a recent GitHub project)

the only new one appears to be good first issue which is #7057ff (purple) ... 💜

Todo

• add good first issue #7057ff to the "Github also gives you" section of the readme.
  

note: I'm not talking about this noise: https://github.com/yoshuawuyts/github-standard-labels ... 🤦‍♂️