Fix package name formatting in CI workflow and update README badges

[rbeucher]

This pull request updates the package name references from access-mopper to access_mopper to ensure consistency across documentation and deployment scripts. This change helps avoid issues with package discovery and installation, particularly on PyPI and Conda.

Package naming consistency:

• Updated PyPI and Conda badge links in README.md to use access_mopper instead of access-mopper, ensuring documentation matches the actual package name.
• Changed the PACKAGE_NAME variable in .github/workflows/cd.yml from access-mopper to access_mopper to align with the correct package name during deployment.