feat: support LLM understand video

[hjlarry]

Checklist:

Important

Please review the checklist below before submitting your pull request.

• Please open an issue before creating a PR or link to an existing issue
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

Description

change list

• support transfer a video file to a VideoPromptMessageContent
• support qwen model understand video
• support zhipu model understand video
• when create a new agent app and open the vision feature, default allow video format files upload

restrictions

• the qwen model requires users to submit a work order for application, and it only support url send mode
• the exist agent app, its model config already saved in the database, so can't upload video format files

preview

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update, included: Dify Document
• Improvement, including but not limited to code refactoring, performance optimization, and UI/UX improvement
• Dependency upgrade

Testing Instructions

test locally

• Test local video file send with base64 format
• Test remote video file send with base64 format
• Test remote video file send with url format
• Test workflow's llm node

test link: https://cloud.video.taobao.com/vod/S8T54f_w1rkdfLdYjL3S5zKN9CrhkzuhRwOhF313tIQ.mp4
test file: https://github.com/user-attachments/assets/f5264e1f-e360-4b07-a201-da1216b0310a

[laipz8200]

LGTM

[laipz8200]

Hi @hjlarry, could you please also add the new environment variable into the .env.example and the docker-compose.yaml file under the docker/?

[hjlarry]

Hi @hjlarry, could you please also add the new environment variable into the .env.example and the docker-compose.yaml file under the docker/?

sure, I will add it later.