Alizer's 'Version.SchemaVersion' property type is to be a 'string', not a 'number'

[vrubezhny]

The Alizer's Version.SchemaVersion property type is to be of type string according to the binary output:

$ ./alizer-v1.6.0-linux-amd64 devfile ./nodejs-starter
[
    {
        "Name": "nodejs",
        "Language": "JavaScript",
        "ProjectType": "Node.js",
        "Tags": [
            "Node.js",
            "Express",
            "ubi8"
        ],
        "Versions": [
            {
                "SchemaVersion": "2.2.2",
                "Default": true,
                "Version": "2.2.1"
            },
            {
                "SchemaVersion": "2.1.0",
                "Default": false,
                "Version": "2.2.0"
            },
            {
                "SchemaVersion": "2.1.0",
                "Default": false,
                "Version": "2.1.1"
            }
        ]
    }
]