New Java project for NBLS over LSP for Maven and Gradle

VSNetBeans is missing an easy way to create a New Java project. This is really missing and I personally switch to NetBeans to jump start new project so pom.xml... is created for me as well as main Java class.

To really enable Java development in VSCode we need to provide this functionality. Otherwise it is missing the Start of Java journey for ordinary developer.

It will be good if connect this to NBLS project support and enable Maven+Gradle projects there. Wizard should be invoked from Command Palette and will likely consists of several steps for simplest project types.

For the start we can support just some simple projects. 

Original idea was to get pom.xml with main Java class set for execution, jar packaging and listing main class for jar execution in Manifest.mf...