Java14 Full Records Support Check Validation: InnerTypeLastCheck

[nrmancuso]

Child of #8452
Check documentation: https://checkstyle.sourceforge.io/config_design.html#InnerTypeLast

From check documentation:
Checks nested (internal) classes/interfaces are declared at the bottom of the primary (top-level) class after all method and field declarations.

➜  full-record-grammar /usr/lib/jvm/java-14-openjdk/bin/javac --enable-preview --source 14 TestClass.java
Note: TestClass.java uses preview language features.
Note: Recompile with -Xlint:preview for details.
➜  full-record-grammar cat config.xml    
<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
          "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
          "https://checkstyle.org/dtds/configuration_1_3.dtd">
<module name="Checker">
  <module name="TreeWalker">
      <module name="InnerTypeLast"/>
  </module>
</module>
➜  full-record-grammar cat TestClass.java
public class TestClass{
    record Test (){
        private static String s; // OK
        record InnerTest1() {}
        public void test() {} // should be violation, method should be declared before inner types.
    }

    public void test() {} // should be violation, method should be declared before inner types.

    record Test3 (){
        private static String s; // ok
        class InnerTest1 {}
        public void test() {} // violation, method should be declared before inner types.
    }

    record Test4 (){
        private static String s; // ok
        record MyInnerRecord(){}
        static Test3 innerRecord = new Test3(); //ok
        public void test() {}// should be a violation, method should be declared before inner types.
    }
    record Test5 (){
        private static String s; // ok
        static Test3 myRecordTest = new Test3(); //ok
        public void test() {} // ok
    }
}%                                                                                                                            ➜  full-record-grammar java $RUN_LOCALE -jar ~/IdeaProjects/checkstyle/target/checkstyle-8.35-SNAPSHOT-all.jar -c config.xml TestClass.java
Starting audit...
[ERROR] /home/nick/Desktop/full-record-grammar/TestClass.java:13:9: Fields and methods should be before inner classes. [InnerTypeLast]
Audit done.
Checkstyle ends with 1 errors.

We need to add support for record declarations and bodies to this check.

[esilkensen]

Fix is merged