feat: add cloudflare workers ai embeddings

[siavashs]

This change adds support for Cloudflare Workers AI Embeddings.

References:

• https://python.langchain.com/docs/integrations/text_embedding/cloudflare_workersai/
• https://developers.cloudflare.com/workers-ai/models/#text-embeddings

Signed-off-by: Siavash Safi [email protected]

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[ogabrielluiz]

hey @siavashs

Sorry for the taking so long to review this. Are there other CloudFlare Workers components you want to add?

[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #3697 will improve performances by ×9.9

_{Comparing siavashs:feat/cloudflare-workers-ai-embeddings (7ebe360) with main (0f5c31f)}

Summary

⚡ 3 improvements ✅ 12 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	siavashs:feat/cloudflare-workers-ai-embeddings	Change
⚡	test_get_all	5,192.8 ms	523.8 ms	×9.9
⚡	test_successful_run_with_input_type_any	205.3 ms	129.6 ms	+58.43%
⚡	test_successful_run_with_input_type_text	172.3 ms	127.4 ms	+35.33%

[siavashs]

Hey @ogabrielluiz no problem. I'm considering to add chat support too https://python.langchain.com/docs/integrations/chat/cloudflare_workersai/ I can add it to the same PR and also fix the merge conflicts.

[siavashs]

Hitting a dependency conflict with langchain-community>=0.3.6 on sqlalchemy so I guess that needs to be sorted out first. We can merge this PR as is.