Add learning objectives for Collaboration on GitHub

[steve-crouch]

There are no learning objectives for the Introduction to Collaboration on GItHub lesson, although they do already exist for the original materials ^{1 2 3} upon which they are based. A suggested ported set of learning objectives (curated to what's in the UNIVERSE-HPC version) are:

• Git Refresher
  • Commit changes in a software project to a local repository and publish them in a remote repository on GitHub
  • Create and use branches for managing different threads of code development
  • Learn to use feature branch workflow to effectively collaborate with a team on a software project
• Issue Management
  • Learn what issues are and why they are useful.
  • Create an issue on GitHub.
  • Classify an issue depending on its purpose.
  • Refer to colleagues or yourself in aspects related to issues.
• Collaborative Workflow
  • Describe commonly used code review techniques.
  • Describe how code reviews and pull requests can be used within teams to increase communication and improve code.
  • Raise a pull request via GitHub to be reviewed by others.
  • Conduct and submit a code review of a pull request.
  • List the characteristics of what makes a good code review process.