feat(cpp): update CPP14 parser grammar

Update the CPP14 parser grammar file to align with the latest language specifications.

Author: phodal

chapi-ast-cpp/src/main/antlr/CPP14Parser.g4

@@ -699,30 +699,25 @@ abstractDeclarator
     ;
 
 pointerAbstractDeclarator
-    : noPointerAbstractDeclarator
-    | pointerOperator+ noPointerAbstractDeclarator?
+    : pointerOperator* (noPointerAbstractDeclarator | pointerOperator)
     ;
 
 noPointerAbstractDeclarator
-    : noPointerAbstractDeclarator (
+    : (parametersAndQualifiers | LeftParen pointerAbstractDeclarator RightParen) (
         parametersAndQualifiers
-        | noPointerAbstractDeclarator LeftBracket constantExpression? RightBracket attributeSpecifierSeq?
-    )
-    | parametersAndQualifiers
-    | LeftBracket constantExpression? RightBracket attributeSpecifierSeq?
-    | LeftParen pointerAbstractDeclarator RightParen
+        | LeftBracket constantExpression? RightBracket attributeSpecifierSeq?
+    )*
     ;
 
 abstractPackDeclarator
     : pointerOperator* noPointerAbstractPackDeclarator
     ;
 
 noPointerAbstractPackDeclarator
-    : noPointerAbstractPackDeclarator (
+    : Ellipsis (
         parametersAndQualifiers
         | LeftBracket constantExpression? RightBracket attributeSpecifierSeq?
-    )
-    | Ellipsis
+    )*
     ;
 
 parameterDeclarationClause
@@ -1077,4 +1072,4 @@ literal
     | BooleanLiteral
     | PointerLiteral
     | UserDefinedLiteral
-    ;
+    ;