Admin scaffolding

[ostepan8]

ℹ️ Issue

Closes #18 Admin Entity

📝 Description

Write a short summary of what you added. Why is it important? Any member of C4C should be able to read this and understand your contribution -- not just your team members.

Basically, i added the admin entity, created basic crub ffunctionality for the admin entity, and set up a controller for the endpoints. Basically scaffolding out the admin functionality

Briefly list the changes made to the code:

1. Added an admin entity with its own information
2. Added a migration script to add the admin entity into the db
3. Added admin service which is basically an api to use the crud functions associated with the admin
4. Added a controller to better use the admin service without tight coupling

✔️ Verification

What steps did you take to verify your changes work? These should be clear enough for someone to be able to clone the branch and follow the steps themselves.

I tested all of the methods with curl. like this: ostepan@Owens-MacBook-Pro proj-bhchp % curl -X POST http://localhost:3000/api/admins
-H "Content-Type: application/json"
-d '{
"name": "John Doe",
"email": "john@example.com",
"site": "site_a"
}'

Provide screenshots of any new components, styling changes, or pages.

🏕️ (Optional) Future Work / Notes

Did you notice anything ugly during the course of this ticket? Any bugs, design challenges, or unexpected behavior? Write it down so we can clean it up in a future ticket!

The migrations were a little weird, I think I set them up right, but I am not like incredibly experienced in that