FRB Refactor

[profxj]

Fixes # .

Description of the Change

Adds new FRB functionality to FFFF-PZ. This includes the FRBTransient, FRBGalaxy, and Path models.

These are exposed in view and the API.

Checklist

Please check all that apply to your proposed changes

• [ X] HTML code change
• [ ] Added package dependency
• [ ] Added data
• [ X] Changed django model
• [ ] Documentation change

Additional context

[profxj]

Need to redirect this