API simplification

No files or tests are named. Start by reviewing the existing ModelManager, ModelCreator, and InferenceClient interfaces and the import and configuration examples in the issue. Clarify which API changes are in scope with maintainers; done should mean an agreed, tested replacement for the selected interfaces without breaking documented usage.

What do you think about API simplification?

1. Too long import:
   Current:
   from sap.aibus.dar.client.model_manager_client import ModelManagerClient
   Proposal:
   'from sap.dar import MMClient'

2. Code cutting for model creation:
   Current:
   with open('dar_test.txt', 'r') as sk_file: sk_data = sk_file.read() json_data = json.loads(sk_data) creator = ModelCreator.construct_from_credentials( dar_url=json_data['url'], clientid=json_data['uaa']['clientid'], clientsecret=json_data['uaa']['clientsecret'], uaa_url=json_data['uaa']['url'], )
   Proposal:
   creator = ModelCreator(filekey='dar_test.txt')

3. Config proposal:
   Current:
   new_schema = {
   "features": [
   {"label": "manufacturer", "type": "CATEGORY"},
   {"label": "description", "type": "TEXT"},
   {"label": "price", "type": "NUMBER"},
   ],
   "labels": [
   {"label": "level1_category", "type": "CATEGORY"},
   {"label": "level2_category", "type": "CATEGORY"},
   {"label": "level3_category", "type": "CATEGORY"},

   ],
   "name": "bestbuy-category-prediction",
   }
   Proposal:
   Features = fc.Category(["manufacturer"])+fc.Text(["description"])+ fc.Number(["price])
   Labels = fc.Category(["level1_category,level2_category,level3_category"])
   Schema = Features+Labels
   ^
   less code, easy to read, easy to change

4. Enums for templates:
   Current:
   model_template_id="d7810207-ca31-4d4d-9b5a-841a644fd81f"
   Proposal:
   model_template = 0

5. One class for rule them all:
   Current:
   ModelManager, ModelCreator, InferenceClient, etc.
   Proposal:
   DARModel
   DARModel.create()
   DARModel.deploy()
   DARModel.inference()
   DARModel.templates
   DARModel.deployments
   etc...