docs: Add PyPI badge to README

[blooop]

Summary

• Adds PyPI version badge to the README badges section

Test plan

• Verify badge renders correctly on GitHub

🤖 Generated with Claude Code

Summary by Sourcery

Documentation:

• Include a PyPI version status badge in the README alongside existing project badges.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Adds a PyPI version badge to the README badge section to display the published package version on PyPI.

File-Level Changes

Change	Details	Files
Add a PyPI version badge to the README badges section linking to the project on PyPI.	Insert a new shields.io PyPI version badge into the existing badges block in the README Configure the badge to display the current version of the 'devlaunch' package from PyPI and link to its PyPI project page	README.md

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.40%. Comparing base (ec3ef38) to head (876884e).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #5   +/-   ##
=======================================
  Coverage   65.40%   65.40%           
=======================================
  Files           3        3           
  Lines         422      422           
=======================================
  Hits          276      276           
  Misses        146      146           

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