template for service rather than hub

Previous template structure had direct handling of auth. This structure is designed to get auth from the hub instead.

src/schemas.py

@@ -1,12 +1,20 @@
 """
-Global Pydantic models
+Global Pydantic schemas
 
 Exports:
- - CustomBaseModel: Pydantic BaseModel with extra parameters
+ - CustomBaseModel: Schema used for all other Pydantic models
+ - ResourceName
 """
-
 from pydantic import BaseModel
+from typing import Optional
 
 
 class CustomBaseModel(BaseModel):
 	pass
+
+
+class ResourceName(CustomBaseModel):
+	service: str
+	organisation: str
+	resource: str
+	instance: Optional[str] = None