feat(engine-render): add render unit system

[wzhudev]

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Codecov Report

Attention: Patch coverage is 6.17284% with 152 lines in your changes are missing coverage. Please review.

Project coverage is 29.58%. Comparing base (8c3bb90) to head (89740c1).

Files	Patch %	Lines
...src/controllers/header-unhide.render-controller.ts	0.00%	32 Missing ⚠️
...ender/src/render-manager/render-manager.service.ts	0.00%	31 Missing ⚠️
...es/engine-render/src/render-manager/render-unit.ts	0.00%	23 Missing ⚠️
...ets-ui/src/controllers/freeze.render-controller.ts	0.00%	18 Missing ⚠️
...src/controllers/header-resize.render-controller.ts	0.00%	17 Missing ⚠️
...sheets-ui/src/controllers/utils/component-tools.ts	36.84%	12 Missing ⚠️
packages/sheets-ui/src/views/sheet-canvas-view.ts	0.00%	6 Missing ⚠️
packages/sheets-ui/src/sheets-ui-plugin.ts	0.00%	5 Missing ⚠️
...-ui/src/services/sheet-skeleton-manager.service.ts	42.85%	4 Missing ⚠️
packages/core/src/shared/lifecycle.ts	0.00%	3 Missing ⚠️
... and 1 more

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #2025      +/-   ##
==========================================
- Coverage   29.60%   29.58%   -0.02%     
==========================================
  Files        1179     1180       +1     
  Lines       64277    64327      +50     
  Branches    13617    13617              
==========================================
+ Hits        19028    19032       +4     
- Misses      45249    45295      +46     

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