add MCP server badge

[punkpeye]

This PR adds a badge for the DataBeak server listing in Glama MCP server directory.

Glama performs regular codebase and documentation checks to:

• Confirm that the MCP server is working as expected
• Confirm that there are no obvious security issues
• Extract server characteristics such as tools, resources, prompts, and required parameters.

This badge helps your users to quickly assess that the MCP server is safe, server capabilities, and instructions for installing the server.

[punkpeye]

Realized that GitHub does not recognize the project license

https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/adding-a-license-to-a-repository

Would you mind adding one?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.74%. Comparing base (26d3a3c) to head (c55c49c).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #135   +/-   ##
=======================================
  Coverage   84.74%   84.74%           
=======================================
  Files          27       27           
  Lines        3075     3075           
  Branches      458      458           
=======================================
  Hits         2606     2606           
  Misses        355      355           
  Partials      114      114           

Flag	Coverage Δ
unittests	84.74% <ø> (ø)

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[punkpeye]

We are moving away from contributing badges automatically to README. Should you wish to add Glama badge, please follow instructions provided in the contribution guidelines.