feat(module:avatar): support image load error event

[hsuanxyz]

close #3223

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Application (the showcase website) / infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[codecov]

Codecov Report

Merging #3893 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #3893      +/-   ##
==========================================
+ Coverage   95.24%   95.24%   +<.01%     
==========================================
  Files         726      726              
  Lines       14672    14675       +3     
  Branches     1910     1911       +1     
==========================================
+ Hits        13974    13977       +3     
  Misses        260      260              
  Partials      438      438

Impacted Files	Coverage Δ
components/avatar/nz-avatar.component.ts	98.63% <100%> (+0.05%)	⬆️

---

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 45cd286...049d43c. Read the comment docs.

[netlify]

Deploy preview for ng-zorro-master ready!

Built with commit 049d43c

https://deploy-preview-3893--ng-zorro-master.netlify.com

[wzhudev]

lgtm