fix: pass an optional return value to Database\Model->set() (#28)

This PR addresses a bug that can arise (for example) if an object is passed to a database column that accepts a string. Passing this object (or something else) to the `$return` parameter will return the value of that variable instead of the value of `$value`

Reviewed-on: https://codeberg.org/vlw/scaffold/pulls/28

src/Database/Model.php

@@ -97,9 +97,10 @@
 		 *
 		 * @param string $key Target column to update
 		 * @param mixed $value New value of target column
+		 * @param return $return (optional) Return this instead of $value when set
 		 * @return mixed The value that was sent to $value
 		 */
-		public function set(string $key, mixed $value): mixed {
+		public function set(string $key, mixed $value, mixed $return = null): mixed {
 			$this->_row[$key] = $value;
 
 			$this->db
@@ -107,6 +108,6 @@
 				->where($this->where)
 				->update([$key => $value]);
 
-			return $value;
+			return $return ?? $value;
 		}
 	}