add cosign signature icon

[wy65701436]

Return icon message for UI to render

Signed-off-by: Wang Yan wangyan@vmware.com

[codecov]

Codecov Report

Merging #16533 (3c8fb5e) into main (846dc94) will decrease coverage by 0.04%.
The diff coverage is 57.14%.

@@            Coverage Diff             @@
##             main   #16533      +/-   ##
==========================================
- Coverage   67.39%   67.35%   -0.05%     
==========================================
  Files         951      951              
  Lines       78909    78920      +11     
  Branches     2321     2321              
==========================================
- Hits        53183    53156      -27     
- Misses      22167    22203      +36     
- Partials     3559     3561       +2     

Flag	Coverage Δ
unittests	67.35% <57.14%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/pkg/accessory/model/accessory.go	88.23% <ø> (ø)
src/server/v2.0/handler/model/accessory.go	0.00% <0.00%> (ø)
src/controller/icon/controller.go	61.70% <28.57%> (-3.42%)	⬇️
src/pkg/accessory/manager.go	83.05% <100.00%> (+1.91%)	⬆️
src/controller/event/handler/auditlog/auditlog.go	8.69% <0.00%> (-52.18%)	⬇️
src/lib/cache/util.go	73.68% <0.00%> (-15.79%)	⬇️
...es/vulnerability/vulnerability-config.component.ts	52.38% <0.00%> (-9.53%)	⬇️
src/controller/event/topic.go	1.80% <0.00%> (-9.01%)	⬇️
src/common/utils/passports.go	84.61% <0.00%> (-5.13%)	⬇️
...t/artifact-list-page/artifact-list-page.service.ts	26.58% <0.00%> (-0.35%)	⬇️
... and 1 more

[chlins]

lgtm