Pull from remote branch, update locally and send pull request to original repo

[brgcy]

Consider the following diagram:

Go through the following set of tasks:

1. Add the required remote brg repo to connect to BRG repo (https://github.com/brgcy/git-gh-course)
2. Fetch the brg remote changes.
3. Create the brg-branch locally tracking the brg-branch branch of brg remote repo.
4. MAIN TASK : Create a file in the format <your_nick_name>.txt having your full name inside it. See example brg.txt.
5. Add the file and commit as Added <your_nick_name> file
6. Push the branch to your origin repo
7. Create the Pull Request from the brg-branch to main branch of original repo (upstream)