CI: add style check

[KarthikNayak]

No description provided.

[gitgitgadget]

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[gitgitgadget]

There are issues in commit 6a57469:
testing styles
Commit checks stopped - the message is too short
Commit not signed off

[gitgitgadget]

There are issues in commit 3d0e820:
testing styles
Commit checks stopped - the message is too short
Commit not signed off

[dscho]

/allow

[gitgitgadget]

User KarthikNayak is now allowed to use GitGitGadget.

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[KarthikNayak]

/allow

Thanks @dscho, this was just for testing. Will close this PR.