Update logo for the project browser

Problem/Motivation
The module’s logo isn’t showing in the Project Browser and, as a result, does not appear on drupalcode.org or on the module’s Drupal.org page.

Proposed Resolution
Ensure the module logo is correctly positioned by moving it to the expected location.

Steps to Implement:

• Place a logo.png file in the repository’s root directory.
• Confirm the file is present on the default branch.