Developer experience - linting, formatting, pre-commit

For https://uniofcam.atlassian.net/browse/AM-150

Overview

1. Setup eslint for code linting
2. Setup prettier for code formatting
3. Setup pre-commit to run the above and other standard checks on pre-commit.
4. Setup template CI pipeline to run pre-commit on build, and other standard checks.
5. Ran pre-commit on all files in the repo to format.
6. Couple of minor alterations that eslint picked up.