test: Enhance Coverage + CI (#1055)

Reviewed-on: https://gitea.com/gitea/runner/pulls/1055
Reviewed-by: Lunny Xiao <[email protected]>
Co-authored-by: bircni <[email protected]>

.gitignore

@@ -3,6 +3,7 @@
 !/act/runner/testdata/secrets/.env
 .runner
 coverage.txt
+.tmp/
 /config.yaml
 
 # Jetbrains
@@ -12,3 +13,4 @@ coverage.txt
 __debug_bin
 # gorelease binary folder
 /dist
+.DS_Store