feat(object): add CGObject::IsA

src/object/client/CGObject.cpp

@@ -36,6 +36,10 @@ OBJECT_TYPE_ID CGObject::GetTypeID() const {
     return this->m_typeID;
 }
 
+int32_t CGObject::IsA(OBJECT_TYPE type) const {
+    return (this->GetType() & type) != 0;
+}
+
 CGObjectData* CGObject::Obj() const {
     return this->m_obj;
 }

src/object/client/CGObject.hpp

@@ -31,6 +31,7 @@ class CGObject {
         WOWGUID GetGUID() const;
         OBJECT_TYPE GetType() const;
         OBJECT_TYPE_ID GetTypeID() const;
+        int32_t IsA(OBJECT_TYPE type) const;
 
     protected:
         // Protected member variables