Add documentation about new flags

Author: poechsel

compiler/src/dotty/tools/dotc/tastyreflect/FlagsOpsImpl.scala

@@ -43,7 +43,6 @@ trait FlagsOpsImpl extends scala.tasty.reflect.FlagsOps with CoreImpl {
     def Stable: Flags = core.Flags.StableRealizable
     def Param: Flags = core.Flags.Param
     def ParamAccessor: Flags = core.Flags.ParamAccessor
-    def JavaDefined: Flags = core.Flags.JavaDefined
     def Enum: Flags = core.Flags.Enum
     def ModuleClass: Flags = core.Flags.ModuleClass
     def PrivateLocal: Flags = core.Flags.PrivateLocal

library/src/scala/tasty/reflect/FlagsOps.scala

@@ -102,16 +102,19 @@ trait FlagsOps extends Core {
     /** Is this symbol a parameter accessor */
     def ParamAccessor: Flags
 
-    def JavaDefined: Flags
-
+    /** Is this symbol an enum */
     def Enum: Flags
 
+    /** Is this symbol a module class */
     def ModuleClass: Flags
 
+    /** Is this symbol labeled private[this] */
     def PrivateLocal: Flags
 
+    /** Is this symbol a package */
     def Package: Flags
 
+    /** Is this symbol an implementation class of a Scala2 trait */
     def ImplClass: Flags
   }