feat: added vs code setting for java checkstyle

[asmfstatoil]

No description provided.

[EvenSol]

Very good! I will use this in further coding.

[EvenSol]

also devcontainer file should be updated:

// Set *default* container specific settings.json values on container create.
	//"settings": { 
	//	"java.home": "/docker-java-home"
	//},
  "settings": {
    "java.configuration.updateBuildConfiguration": "interactive",
    "[java]": {
        "editor.defaultFormatter": "redhat.java",
        "editor.formatOnSave": true,
        "editor.tabSize": 2,
        "editor.insertSpaces": true,
        "editor.detectIndentation": false
    },
    "java.format.settings.url": "https://raw.githubusercontent.com/google/styleguide/gh-pages/eclipse-java-google-style.xml",
    "java.saveActions.organizeImports": true,
    "java.checkstyle.version": "10.3",
    "java.checkstyle.configuration": "https://github.com/checkstyle/checkstyle/blob/master/src/main/resources/google_checks.xml"
},