Add badge for CI.

[dajiaji]

No description provided.

[codecov]

Codecov Report

Merging #27 (9a391c6) into main (c1ff5ed) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #27   +/-   ##
=======================================
  Coverage   88.47%   88.47%           
=======================================
  Files          13       13           
  Lines         746      746           
  Branches      172      172           
=======================================
  Hits          660      660           
  Misses         56       56           
  Partials       30       30           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c1ff5ed...9a391c6. Read the comment docs.