VideoGen

### App
VideoGen
https://docs.videogen.io/

### Sources
workflow-run-succeeded
workflow-run-failed
tool-execution-succeeded
tool-execution-failed
file-upload-completed
file-playback-ready
file-download-ready

### Actions
script-to-video
voiceover-to-video
slideshow-to-video
prompt-to-video-clip
generate-image
generate-video-clip
generate-avatar
generate-music
generate-sound-effect
generate-motion-graphic
text-to-speech
export-project
remix-project
create-file-upload
create-entity
get-project
get-file
get-files
get-workflow-run
get-tool-execution-info
list-projects
list-workflow-runs
list-tool-executions
list-entities
list-project-remix-actions
list-tts-voices
list-languages
cancel-workflow-run
cancel-tool-execution
upscale-image
upscale-video
remove-image-background
remove-video-background
vectorize-image
image3d-effect

Review existing app integrations in the Pipedream repository and identify the entry points used for declaring sources and actions. Use the VideoGen documentation and verify each listed event and operation against the integration conventions. Done means the requested sources and actions are available and their behavior matches the VideoGen API.

Written by the indexing model from the issue text.