Refactor; add services in settings

src/oidc_test/settings.py

@@ -13,7 +13,16 @@ from pydantic_settings import (
 )
 
 
+class Resource(BaseModel):
+    """A resource with an URL that can be accessed with an OAuth2 access token"""
+
+    name: str
+    url: str
+
+
 class OIDCProvider(BaseModel):
+    """OIDC provider, can also be a resource server"""
+
     id: str
     name: str
     url: str
@@ -22,6 +31,7 @@ class OIDCProvider(BaseModel):
     # For PKCE (not implemented yet)
     code_challenge_method: str | None = None
     hint: str = "No hint"
+    resources: list[Resource] = []
 
     @computed_field
     @property