feat: Setup packaging and Github Codespaces dev environment

[lsetiawan]

Overview

This PR restructured the package and add Github codespaces coding environment.

Issues Addressed

• Setup packaging to meet Scientific Python structure #1
• Setup codespaces dev environment #15

[uwcdc]

I also closed issue #15 with this PR

[uwcdc]

This PR has been updated to close the following Issues:

• Update caustic package name to caustics #24
• Ensure that codespaces has jupyter, python, and liveshare extensions #17
• Add .devcontainer/devcontainer.json for default codespace configuration #16
• Setup codespaces dev environment #15
• Add noxfile.py for easy setup or build of package #10
• Add .readthedocs.yml for hosting documentation on ReadTheDocs #9
• Add .pre-commit-config.yaml for setting up pre-commit #8
• Add .github/dependabot.yml for updating github actions versions #7
• Change test directory name from test to tests #4
• Update build frontend to use hatch #3
• Move codebase to be under src directory #2
• Setup packaging to meet Scientific Python structure #1