CLOUDP-294587: Update FOASCLI version to list also the preview api version

[andreaangiolillo]

Proposed changes

This PR updates the foascli version to include the preview API version in the list. It also define a new stability-level flag to allow the user to filter out preview or stable API version from the output list

Jira ticket: CLOUDP-294587

./bin/foascli versions -s /Users/andrea.angiolillo/Downloads/openapi-mms-with-preview.json                        

[
  "2023-01-01",
  "2023-02-01",
  "2023-10-01",
  "2023-11-15",
  "2024-05-30",
  "2024-08-05",
  "2024-10-23",
  "2024-11-13",
  "2025-05-30",
  "2043-01-01",
  "preview"
]

./bin/foascli versions -s /Users/andrea.angiolillo/Downloads/openapi-mms-with-preview.json -l PREVIEW                                                 

[
  "preview"
]

./bin/foascli versions -s /Users/andrea.angiolillo/Downloads/openapi-mms-with-preview.json -l STABLE                                                 

[
  "2023-01-01",
  "2023-02-01",
  "2023-10-01",
  "2023-11-15",
  "2024-05-30",
  "2024-08-05",
  "2024-10-23",
  "2024-11-13",
  "2025-05-30",
  "2043-01-01"
]

[gssbzn]

LGTM