Add support to Fal ai

[KaifAhmad1]

Checked

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• I've clearly described the feature request and motivation for it

Feature request

Add support to Fal AI for faster Video and Image Inference
https://docs.fal.ai/introduction

Motivation

LangChain is being widely adopted for building multimodal agents. Current options for image and video inference are limited in speed and flexibility. Fal AI provides fast, scalable inference for open-source vision models through a simple API, making it a great fit for real-time or low-latency use cases.

Proposal (If applicable)

No response