feat(util): add omit

[cipchk]

• close 增加对元素对象的移除支持 ng-alain#2216

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 #1519 (e395bd9) into master (50f35a9) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head e395bd9 differs from pull request most recent head 53971ec. Consider uploading reports for the commit 53971ec to get more accurate results

@@           Coverage Diff           @@
##           master    #1519   +/-   ##
=======================================
  Coverage   95.64%   95.65%           
=======================================
  Files         271      272    +1     
  Lines        8459     8469   +10     
  Branches     1649     1653    +4     
=======================================
+ Hits         8091     8101   +10     
  Misses        307      307           
  Partials       61       61           

Impacted Files	Coverage Δ
packages/util/other/object.ts	100.00% <100.00%> (ø)

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