feat: rebuild work queue api with fastapi and postgres

app/config.py

@@ -0,0 +1,11 @@
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    database_url: str = "postgresql://postgres:password@localhost:5432/work_queue"
+    port: int = 8080
+
+    model_config = SettingsConfigDict(env_prefix="", case_sensitive=False)
+
+
+settings = Settings()