fix(userspace/engine): catch YAML parsing and validation errors with right context

Signed-off-by: Jason Dellaluce <jasondellaluce@gmail.com>

userspace/engine/rule_loader.h

@@ -113,6 +113,9 @@ namespace rule_loader
 			item_type item_type,
 			const std::string& item_name,
 			const context& parent);
+		context(
+			const YAML::Mark &mark,
+			const context& parent);
 
 		// Build a context from a condition expression +
 		// parser position. This does not use the original