[Exercise: `create-pr-from-main`] T9L1. Creating a PR from the `main` branch

[damithc]

Exercise_ID: see issue subject
Lesson: https://git-mastery.org/lessons/prsCreate/
Instructions for students: https://git-mastery.org/lessons/prsCreate/exercise-create-pr-from-main.html

Setup

Inputs to the new.sh:

Exercise name: {{ Exercise_ID }}
Tags (space separated): 
Requires Git? (defaults to y)  [y/N]: y
Requires Github? (defaults to y)  [y/N]: y
Exercise repo type (local, remote, or ignore) (defaults to 'local'): remote
Exercise repo name (defaults to '...'): languages
Initialize exercise repo as Git repository? (defaults to y)  [y/N]: y

Fork https://github.com/git-mastery/gm-languages as <username>-gitmastery-languages.
Clone it as languages

Grading

Verify a PR is created from the main branch of the fork to the upstream repo.
Verify a commit has been pushed after the PR was created, which corrects the year in Java.txt.

[damithc]

@desmondwong1215 you can use this exercise to validate your current work in implementing the exercises infra for tours 9 and 10.