feat: add unit param for slide cmd

[lumixraku]

close #xxx

Pull Request Checklist

• Related tickets or issues have been linked in the PR description (or missing issue).
• Naming convention is followed (do please check it especially when you created new plugins, commands and resources).
• Unit tests have been added for the changes (if applicable).
• Breaking changes have been documented (or no breaking changes introduced in this PR).

[github-actions]

View Deployment

📑 Examples	📚 Storybook
🔗 Preview link	🔗 Preview link

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 121 lines in your changes missing coverage. Please review.

Project coverage is 27.49%. Comparing base (9ce3f8d) to head (4130bf4).
Report is 6 commits behind head on dev.

Files	Patch %	Lines
...ides-ui/src/controllers/slide.render-controller.ts	0.00%	41 Missing ⚠️
packages/slides-ui/src/controllers/canvas-view.ts	0.00%	16 Missing ⚠️
...src/controllers/slide-editing.render-controller.ts	0.00%	9 Missing ⚠️
...ntrollers/slide-editor-bridge.render-controller.ts	0.00%	9 Missing ⚠️
...s-ui/src/commands/operations/activate.operation.ts	0.00%	6 Missing ⚠️
...i/src/commands/operations/insert-text.operation.ts	0.00%	6 Missing ⚠️
.../src/commands/operations/append-slide.operation.ts	0.00%	5 Missing ⚠️
.../src/commands/operations/insert-shape.operation.ts	0.00%	5 Missing ⚠️
.../src/commands/operations/insert-image.operation.ts	0.00%	4 Missing ⚠️
...rc/commands/operations/delete-element.operation.ts	0.00%	3 Missing ⚠️
... and 9 more

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #3038   +/-   ##
=======================================
  Coverage   27.49%   27.49%           
=======================================
  Files        1979     1979           
  Lines      104689   104675   -14     
  Branches    22586    22589    +3     
=======================================
  Hits        28780    28780           
+ Misses      75909    75895   -14     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.