docs: Add guide "HttpCrawler with custom parser" #28

Job	Run time
PR title check	5s
Code checks / Actions lint check	35s
Doc checks / Doc checks / Docs check	1m 44s
Code checks / Type check / Type check (3.11)	44s
Code checks / Type check / Type check (3.13)	48s
Code checks / Type check / Type check (3.10)	49s
Code checks / Type check / Type check (3.14)	49s
Code checks / Lint check / Lint check (3.10)	24s
Code checks / Lint check / Lint check (3.13)	21s
Code checks / Type check / Type check (3.12)	50s
Code checks / Lint check / Lint check (3.11)	27s
Code checks / Lint check / Lint check (3.12)	27s
Code checks / Lint check / Lint check (3.14)	29s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	5m 5s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	3m 50s
Tests / Unit tests / Unit tests (macos-latest, 3.11)	4m 9s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	4m 43s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	4m 45s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	6m 8s
Tests / Unit tests / Unit tests (macos-latest, 3.10)	8m 18s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	5m 12s
Tests / Unit tests / Unit tests (windows-latest, 3.10)	6m 25s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	6m 24s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.10)	6h 0m 16s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	5m 59s
Tests / Unit tests / Unit tests (macos-latest, 3.14)	7m 32s
Tests / Unit tests / Unit tests (macos-latest, 3.12)	12m 33s
Tests / Unit tests / Unit tests (macos-latest, 3.13)	4m 28s
	7h 34m 19s

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