docs: Add Crawl4AI guide #655

Job	Run time
Checks / Actions lint check	32s
Checks / E2E tests (3.11, ubuntu-latest)	5m 41s
Checks / E2E tests (3.14, ubuntu-latest)	5m 27s
Checks / Integration tests (3.11, ubuntu-latest)	2m 17s
Checks / Lint check / Lint check (3.12)	12s
Checks / Lint check / Lint check (3.14)	11s
PR title check	6s
Checks / Spell check	9s
Checks / Lint check / Lint check (3.13)	14s
Checks / Package check	24s
Checks / Integration tests (3.14, ubuntu-latest)	3m 25s
Checks / Type check / Type check (3.12)	11s
Checks / Type check / Type check (3.11)	9s
Checks / Type check / Type check (3.14)	11s
Checks / Lint check / Lint check (3.11)	9s
Checks / Type check / Type check (3.13)	12s
Checks / Unit tests / Unit tests (windows-latest, 3.13)	2m 6s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.14)	1m 2s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.11)	1m 3s
Checks / Unit tests / Unit tests (windows-latest, 3.11)	1m 37s
Checks / Unit tests / Unit tests (windows-latest, 3.12)	1m 32s
Checks / Doc check / Docs check	58s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.13)	1m 0s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.12)	1m 2s
Checks / Unit tests / Unit tests (windows-latest, 3.14)	1m 29s
	31m 19s

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