feat: support `cog://` protocol

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 80.76923% with 5 lines in your changes missing coverage. Please review.

Project coverage is 58.46%. Comparing base (45a2715) to head (8d6a005). Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
src/source/cog.ts	85.71%	3 Missing :warning:
src/render/pool.ts	0.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #111 +/- ## ========================================== + Coverage 58.09% 58.46% +0.36% ========================================== Files 19 20 +1 Lines 1575 1601 +26 Branches 98 102 +4 ========================================== + Hits 915 936 +21 - Misses 657 662 +5 Partials 3 3 ```

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