Introduce licenseScan scan type

[de-jcup]

Situation

This is a kind of sub issue of #1152

Wanted

We want a new scan type: licenseScan

Solution

• Introduce new scantype in SecHub configuration model
• Update documentation
• We need Introduce data section inside sechub configuration file #1098 implement before to have the data section usage possiblity

Format inside sechub configuration model JSON (as fictional suggested by #1098):

{
  "apiVersion" : "1.0",
  "server" : "https://sechub.example.org",
  "project" : "gamechanger",
  "data" : {
    "sources" : [ {
      "name" : "android-sources",
      "fileSystem" : {
        "folders" : [ "gamechanger-android/src/main/java", "gamechanger-server/src/main/java" ]
      }
    }],
    "binaries" : [ {
      "name" : "android-libraries",
      "fileSystem" : {
        "folders" : [ "gamechanger-android/lib/dlls", "gamechanger-server/lib/so" ]
      }
    }]
  "licenseScan" : {
    "use" : [ "android-sources","android-libraries" ]
  }
}