feat: add llms.txt file to documentation site #9637

Job	Run time
Detect what files changed	11s
Run linters	2m 45s
Call reusable workflow / Run unit tests	5m 42s
Upload docs dist artifact	3m 5s
Check dependencies	-1s
Analyze bundle size	-1s
Check actions pin	-1s
Upload docs dist artifact (storybook)	-1s
Generate Diff	-1s
Build package	-1s
Call reusable workflow	-1s
Prepare and upload e2e's HTML report artifact	-1s
Report unit test results	17s
Call reusable workflow / Upload PR workflow payload artifact	16s
Call reusable workflow / Download PR workflow payload artifact	-1s
	12m 7s

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