Add error for constructors, destructors, static methods declared with qualifiers

SWIG parses a superset of valid C++ declarations. These ill-formed declarations
were previously successfully parsed but now result an error message.

Examples/test-suite/errors/cpp_invalid_qualifiers.i

@@ -0,0 +1,43 @@
+%module cpp_invalid_qualifiers
+
+// Constructors, destructors and static methods cannot have qualifiers
+struct A {
+  ~A() const;
+};
+struct B {
+  virtual ~B() const;
+};
+struct C {
+  ~C() &;
+};
+struct D {
+  virtual ~D() &;
+};
+struct E {
+  ~E() &&;
+};
+struct F {
+  virtual ~F() &&;
+};
+
+struct J {
+  J() const;
+  J(int) const;
+};
+struct K {
+  K() &;
+  K(int) &;
+};
+struct L {
+  L() &&;
+  L(int) &&;
+};
+
+struct M {
+  static void m1() const;
+  static void m2() &;
+  thread_local static void m3() &&;
+  static auto m4() const -> int;
+  static auto m5() & -> int;
+  static auto m6() && -> int;
+};