Constrain SimpleAccessorNameNotationCheck

[delanym]

https://sevntu-checkstyle.github.io/sevntu.checkstyle/apidocs/com/github/sevntu/checkstyle/checks/coding/SimpleAccessorNameNotationCheck.html

First off this is better categorised as a naming error than a coding error.
https://sevntu-checkstyle.github.io/sevntu.checkstyle/apidocs/com/github/sevntu/checkstyle/checks/naming/package-summary.html

I want the option of only applying the rule to instance variables.

sol@kun:/git/checkstyle-sandbox$ javac Simple.java
sol@kun:/git/checkstyle-sandbox$ cat Simple.java

import java.util.List;

public class Simple {

  private static final String LEGAL_FORMS = "";

  public static String getLegalForms() {
    return LEGAL_FORMS;
  }
}

sol@kun:/git/checkstyle-sandbox$ java -cp checkstyle-11.0.0-all.jar:sevntu-checks-1.44.1.jar com.puppycrawl.tools.checkstyle.Main -c checkstyle-candidate.xml Simple.java

Starting audit...
[ERROR] /git/checkstyle-sandbox/Simple.java:7:3: Unexpected getter name. [SimpleAccessorNameNotation]
Audit done.
Checkstyle ends with 1 errors.

sol@kun:/git/checkstyle-sandbox$

[romani]

Ok, good suggestion.