[Feature]: Korifi API users do not need to pass lifecycle step and bulidpack when creaing an app

[danail-branekov]

Blockers/Dependencies

No response

Background

As specified in the v3 api spec the lifecycle object is optional

Acceptance Criteria

GIVEN I have deployed Korifi
WHEN I create an app without specifying lilfecycle

curl "https://api.example.org/v3/apps" \
  -X POST \
  -H "Content-type: application/json" \
  -d '{
    "name": "my_app",
    "relationships": {
      "space": {
        "data": {
          "guid": "2f35885d-0c9d-4423-83ad-fd05066f8576"
        }
      }
    }
  }'

THEN I get a 201 Created