Add fastapi-injectable to utils section

[JasperSui]

Hi mjhea0,

fastapi-injectable is a production-ready package for FastAPI developers who need to use dependency injection outside of HTTP routes, which solves the problem that exists in FastAPI ecosystem for a long time.

Basic example here:

from typing import Annotated

from fastapi import Depends
from fastapi_injectable import injectable

class Database:
    def query(self) -> str:
        return "data"

def get_db() -> Database:
    return Database()

@injectable
def process_data(db: Annotated[Database, Depends(get_db)]) -> str:
    return db.query()

# Use it anywhere!
result = process_data()
print(result) # Output: 'data'

Here's the related issue and discussion:

• Issue: Using Depends() in other functions, outside the endpoint path operation! fastapi/fastapi#1105
• Discussion: Using Depends() in other functions, outside the endpoint path operation! fastapi/fastapi#7720

I understand that you said:

I tend to only add projects that are at least a year old and are consistently being updated.

But I genuinely think fastapi-injectable will help lots of devs if this can be put on the list as soon as possible, but this is your project, so the decision is ultimately yours to make.

Anyways, thanks for this "awesome" repository!