feat: markdown streaming #3299

Job	Run time
Print commit stats	1m 5s
Verify build-browser (macos-26)	46s
Verify build-browser (ubuntu-latest)	46s
Build	5m 5s
Build samples	29s
Verify build-browser (windows-latest)	2m 10s
Static code analysis	3m 57s
Type definitions test	2m 1s
Unit test	3m 33s
HTML test (2/17)	7m 49s
HTML test (6/17)	7m 48s
HTML test (7/17)	7m 8s
HTML test (3/17)	7m 49s
HTML test (1/17)	6m 53s
HTML test (5/17)	8m 9s
HTML test (4/17)	7m 51s
HTML test (13/17)	7m 37s
HTML test (9/17)	8m 11s
HTML test (15/17)	7m 18s
HTML test (17/17)	7m 40s
HTML test (14/17)	7m 57s
HTML test (8/17)	7m 5s
HTML test (11/17)	7m 21s
HTML test (10/17)	7m 39s
HTML test (12/17)	7m 35s
HTML test (16/17)	7m 40s
Merge test snapshots	15s
Merge test results	32s
	2h 30m 9s

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