[COMPLIANCE] Add Copyright and License Headers (#1953)

Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>

ui/desktop/electron-app/src/utils/fixPath.js

@@ -1,3 +1,8 @@
+/**
+ * Copyright (c) HashiCorp, Inc.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+
 const { isWindows } = require('../helpers/platform.js');
 const shellEnv = require('shell-env');