Add python and eslint automations to CI/CD pipeline

[LoTerence]

Dependency

• [ ] #609 - we should resolve all eslint errors first, otherwise no one will be able to merge or deploy anything.

Overview

As a developer, we should add linter scripts to the CI/CD pipelines via github actions, so that our codebase will always remain clean and maintainable.

Notes

• The current github action needs updating - it can be found in /.github/workflows/linter.yml

Action Items

• [ ] Make a github action to check code is linted before merging to develop
• [ ] Make a github action to check code is linted before merging to main
• [ ] The gihub action should be migrated to v4

Resources/Instructions

Resources

• https://hackforla.github.io/CivicTechJobs/developer/frontend/#linting

[nooriaali9]

@LoTerence this issue looks good too, please move it to prioritized backlog / in-progress as needed