Add README/contributing guide

[nickebbitt]

We need a simple README and instructions for building and running locally, as well contributing

[Daveu1983]

ReadMe added at d19ab04

Will look to add contributing guide.

[Daveu1983]

Contributing guide should include similar code of conduct detailed at https://jmanc.org/code-of-conduct

[Daveu1983]

Prior to contributing guide, setting up some standard repo rules. Created a team to review PR's - Organisers. Invited @nickebbitt @jonbullock and @CraigMcDonaldCodes to the team

[Daveu1983]

Added branch protection rule to main, only organisers can push direct, pull requests will require review. Code Owners will need to review once code owners file pushed to repo (will add the to contributing guide md). Organisers can dismiss PR rules. No force commits and branch cannot be deleted.

[Daveu1983]

#66 for the contributing guide.

[nickebbitt]

Merge, cheers Dave 👍

[craig-mcd]

I've got #73 for another doc update, not sure if it totally covers all use cases.