feat: add WebView support for extension

[monkeyWie]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 61.33949% with 837 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.69%. Comparing base (a205c0b) to head (e694ab1).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/download/engine/webview/runtime.go	68.35%	122 Missing and 34 partials ⚠️
pkg/download/extension_runtime_webview.go	26.55%	103 Missing and 27 partials ⚠️
internal/webview/goprovider/provider.go	69.27%	94 Missing and 24 partials ⚠️
pkg/download/engine/inject/stream/module.go	58.90%	94 Missing and 19 partials ⚠️
internal/webview/integrationtest/contract.go	55.55%	61 Missing and 51 partials ⚠️
internal/protocol/gblob/registry.go	62.87%	33 Missing and 16 partials ⚠️
internal/webview/rpcprovider/provider.go	60.17%	34 Missing and 11 partials ⚠️
pkg/download/engine/engine.go	63.52%	24 Missing and 7 partials ⚠️
internal/protocol/gblob/fetcher.go	66.66%	21 Missing and 4 partials ⚠️
pkg/download/extension_engine.go	58.13%	13 Missing and 5 partials ⚠️
... and 8 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1359      +/-   ##
==========================================
- Coverage   69.45%   68.69%   -0.77%     
==========================================
  Files          54       60       +6     
  Lines        7272     9177    +1905     
==========================================
+ Hits         5051     6304    +1253     
- Misses       1723     2179     +456     
- Partials      498      694     +196     

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.