add release type logic

[guysaar223]

add release type with array type

addReleaseType(version: string, releaseType: string)

removeReleaseType(version: string, releaseType: string)

need edit the index.json file per version

[
  {
    "version": "0.0.315",
    "date": "2022-03-17",
    "releaseType": ["nightly"]
  },
  {
    "version": "0.0.316",
    "date": "2022-03-18",
    "releaseType": ["stable", "nightly"]
  }
]

[zkochan]

I would suggest the next format instead:

[
  {
    "version": "0.0.315",
    "date": "2022-03-17",
    "nightly": true
  },
  {
    "version": "0.0.316",
    "date": "2022-03-18",
    "nightly": true,
    "stable": true
  }
]