[java] IDEA-375577 Experiment with 'Compact source file' as a separate action

- move caret inside body
- move action under Java

GitOrigin-RevId: b8dddfd9711b4f3b251ec935b781518f64716bbf

java/java-impl/resources/META-INF/JavaPlugin.xml

@@ -2778,7 +2778,7 @@
 
     <registryKey key="java.create.compact.source.file.separately"
                  defaultValue="true"
-                 description="Show 'Create java compact source file' separately from all other classes"/>
+                 description="Show 'Create java compact file' separately from all other classes"/>
 
     <virtualFileCustomDataProvider implementation="com.intellij.ide.JavaCodeStyleSettingsCustomDataSynchronizer"/>
   </extensions>

java/java-impl/resources/fileTemplates/internal/SimpleSourceFile.java.ft

@@ -1,4 +1,4 @@
 #parse("File Header.java")
-void main(#[[$END$]]#) {
-
+void main() {
+  #[[$END$]]#
 }