feat: provide support for groupby

Signed-off-by: Muhammad Aaqil <[email protected]>

lib/dao.js

@@ -1929,7 +1929,18 @@ DataAccessObject.find = function find(query, options, cb) {
               delete obj.__data.__cachedRelations;
             }
           }
-
+          const keys = Object.keys(data);
+          keys.forEach(key => {
+            if (
+              key.includes('sumOf') ||
+              key.includes('countOf') ||
+              key.includes('avgOf') ||
+              key.includes('minOf') ||
+              key.includes('maxOf')
+            ) {
+              obj.__data[key] = data[key];
+            }
+          });
           callback(null, obj);
         }