feat(abc:onboarding): add key

[cipchk]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ng-alain/delon/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

[ng-alain-bot]

Preview is ready!

[codecov]

Codecov Report

Merging #1652 (5402797) into master (60699d5) will decrease coverage by 0.04%.
Report is 1 commits behind head on master.
The diff coverage is 80.95%.

❗ Current head 5402797 differs from pull request most recent head 966d98a. Consider uploading reports for the commit 966d98a to get more accurate results

@@            Coverage Diff             @@
##           master    #1652      +/-   ##
==========================================
- Coverage   95.57%   95.53%   -0.04%     
==========================================
  Files         281      282       +1     
  Lines        8741     8756      +15     
  Branches     1732     1734       +2     
==========================================
+ Hits         8354     8365      +11     
- Misses        319      323       +4     
  Partials       68       68              

Files Changed	Coverage Δ
packages/abc/onboarding/onboarding.storage.ts	42.85% <42.85%> (ø)
packages/abc/onboarding/onboarding.service.ts	98.00% <100.00%> (+0.17%)	⬆️