Hardware team - gpsPi Testing

Title

Improve test coverage for gps Pi module and edited PR template as instructed by professor.

This PR aims to improve test coverage by adding tests for the gps Pi module. The coverage has increased by ~2%.

Put an x in the boxes that apply

[x] Feature (non-breaking change which adds functionality)
[ ] Bug Fix (non-breaking change that fixes an issue)
[ ] Breaking Change (feature/fix that causes existing features to not work as expected)
[ ] Documentation

[x] I have read the [contribute]contributing doc
[x] Classes, scripts, and environment variables follow existing naming convention
[x] Lint and Unit tests pass locally
[x] New features on hardware have been tested on a local Raspberry Pi
[x] Mention new programs/binaries if any must be installed along with this change
[x] Mention new environment variables if any have been added to hardware/env file
[x] Test coverage should not drop more than 3%
[x] Any new required python modules are added to the requirements.txt