feat(abc:cell): add provideCellWidgets

[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
[ ] 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
[ ] No

Other information

[ng-alain-bot]

Preview is ready!

[codecov]

Codecov Report

Merging #1700 (e81b48b) into master (501566b) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head e81b48b differs from pull request most recent head f68c916. Consider uploading reports for the commit f68c916 to get more accurate results

@@           Coverage Diff           @@
##           master    #1700   +/-   ##
=======================================
  Coverage   95.45%   95.45%           
=======================================
  Files         300      301    +1     
  Lines        8823     8828    +5     
  Branches     1659     1659           
=======================================
+ Hits         8422     8427    +5     
  Misses        331      331           
  Partials       70       70           

Files	Coverage Δ
packages/abc/cell/cell-host.directive.ts	100.00% <ø> (ø)
packages/abc/cell/cell.component.ts	98.36% <100.00%> (ø)
packages/abc/cell/cell.module.ts	100.00% <ø> (ø)
packages/abc/cell/provide.ts	100.00% <100.00%> (ø)