Adds the `flat-square` style to action badges. Styles can be selected by
adding `?style=<style>` to the badge endpoint. If no style query is
given, or if the query is invalid, the style defaults to `flat`.
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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
The current action status badge are looking different from most other
badges renders, which is especially noticeable when using them along
with other badges. This PR updates the action badges to match the
commonly used badges from other providers.
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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>