Added JDK 22 GA download option and refactored code a bit

[Achal1607]

• Added JDK 22 GA download option fr both Oracle and Oracle OpenJDK.
• Since on every JDK release we need to update the download labels it gets problematic. So, removed specific version numbers and switched to displaying only JDK family version i.e. 21,17 or 22.
• Also, removed version fetching from releases.json file as it was not working.

Before

Now

jdkDownloaderManagement.json is kept

{  
  oracleJdk: {
             "version":{ baseDownloaderUrl: "downloadUrl"}
  }, 
  openJdk: {
             "version":{ baseDownloaderUrl: "downloadUrl"}
  }
}

So, that in future if some more configuration for a particular JDK is wanted then we can add here without disturbing existing structure.

closes #131