Related Issue(s): #2

Proposed Changes:

1. Adding contribution guidelines
2. Adding a code of conduct
3. Adding a changelog
4. Adding issue and PR templates

PR Checklist:

• This PR is made against the dev branch (all proposed changes except releases should be against dev, not main).
  • Skipping for this PR as they are the initial guidelines changes
• This PR has no breaking changes.
• This PR contains only one commit.
• I have updated or added new tests to cover the changes in this PR.
• Skipping for this PR as there are no code changes
• I have updated the version in package.json to follow the Semantic Versioning guidelines.
• All tests are passing.
• I have added my changes to the CHANGELOG
  or a CHANGELOG entry is not required.
• This PR affects the Source Cooperative Frontend & API,
  and I have opened issue/PR #XXX to track the change.