Extract explicit configuration loading phases

diagnostic.go

@@ -237,3 +237,12 @@ func escapeControls(value string) string {
 	}
 	return b.String()
 }
+
+func hasErrors(diagnostics []Diagnostic) bool {
+	for _, diagnostic := range diagnostics {
+		if diagnostic.Severity == SeverityError {
+			return true
+		}
+	}
+	return false
+}