feat(xatu): reject files with parse errors

src/status/status.rs

@@ -10,6 +10,7 @@ pub trait ResultExt<T> {
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Code {
     InvalidArgument,
+    FailedPrecondition,
     NotFound,
     PermissionDenied,
     Internal,
@@ -39,6 +40,10 @@ impl Status {
         Self::new(Code::InvalidArgument, message)
     }
 
+    pub fn failed_precondition(message: impl Into<String>) -> Self {
+        Self::new(Code::FailedPrecondition, message)
+    }
+
     pub fn permission_denied(message: impl Into<String>) -> Self {
         Self::new(Code::PermissionDenied, message)
     }