Result: Construct a Result from an Option using from_option()

luna/include/luna/Result.h

@@ -127,6 +127,13 @@ template <typename T> class Result
         return m_value.unchecked_release_value({});
     }
 
+    static Result<T> from_option(Option<T>&& option, int error)
+    {
+        if (option.has_value()) { return option.unchecked_release_value({}); }
+        else
+            return Error { error };
+    }
+
   private:
     Option<T> m_value;
     int m_error;