support local dotenv

[zzstoatzz]

closes #766

per pydantic docs

If you need to load multiple dotenv files, you can pass multiple file paths as a tuple or list. The files will be loaded in order, with each file overriding the previous one.

from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(
        # `.env.prod` takes priority over `.env`
        env_file=('.env', '.env.prod')
    )