refactor: optimize bundle size of lite web ide

[erha19]

Types

• 🪚 Refactors

Background or solution

关联 PR opensumi/ide-startup-lite#35

主要修改点如下：

• 整合 encode 工具方法至 @opensumi/ide-utils
• 移除了 Extension 进程对 Debug 代码的直接引用，包大小减少约 500kb
• 移除了多余的 iconv-lite，jschardet 依赖
• 移除了错误的 lodash 引入方式
• 移除了 antd-theme 实例代码

生产模式下包大小从 18.52MB 降至 18.24MB，瘦身效果较少，后续可以继续优化的方向：

• 部分工具库的延时加载，如 jschardet 等
• 移除框架内多余的组件，如 @opensumi/ide-core-browser 内的 Tree 及 Scroller 组件

Changelog

optimize bundle size of lite web ide

[erha19]

修改后仅 OpenSumi 包大小带来的变化：

Before:

After:

[codecov]

Codecov Report

Base: 57.44% // Head: 57.44% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (7377c91) compared to base (90c434f).
Patch coverage: 93.26% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1953   +/-   ##
=======================================
  Coverage   57.44%   57.44%           
=======================================
  Files        1289     1291    +2     
  Lines       80695    80604   -91     
  Branches    16880    16822   -58     
=======================================
- Hits        46352    46304   -48     
+ Misses      31221    31177   -44     
- Partials     3122     3123    +1     

Flag	Coverage Δ
jsdom	52.28% <85.57%> (+0.08%)	⬆️
node	15.77% <15.38%> (-0.09%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/file-service/src/common/files.ts	86.84% <ø> (ø)
...file-service/src/node/disk-file-system.provider.ts	78.46% <ø> (ø)
packages/utils/src/encoding.ts	61.24% <33.33%> (-0.75%)	⬇️
...scode/api/debug/extension-debug-session-factory.ts	43.47% <75.00%> (+1.25%)	⬆️
...ackages/debug/src/browser/debug-session-manager.ts	66.33% <100.00%> (-0.11%)	⬇️
packages/debug/src/browser/debug-session.ts	10.84% <100.00%> (ø)
...es/debug/src/browser/editor/debug-model-manager.ts	25.58% <100.00%> (-2.78%)	⬇️
packages/debug/src/browser/index.ts	93.93% <100.00%> (-1.72%)	⬇️
packages/debug/src/browser/model/debug-source.ts	81.66% <100.00%> (ø)
packages/debug/src/browser/model/debug-watch.ts	91.42% <100.00%> (-0.13%)	⬇️
... and 19 more

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[bytemain]

fantastic!

[bytemain]

太长了，但 LGTM
测试过了就合了吧