Add a command line flag to override composition duration and fps

[iaseth]

As described here, Remotion allows users to override the height and width of the composition using command line flags --height and --width.

npx remotion render HelloWorld out/HelloWorld.mp4 --width=1080 --height=1080

It would be great if a similar flag was there to override the composition duration and fps:

npx remotion render HelloWorld out/HelloWorld.mp4 --duration=900 --fps=30

npx remotion render HelloWorld out/HelloWorld.mp4 --durationSeconds=30 --fps=30

Use Case

It would allow users to easily set the fps and duration when rendering from the command line without having to hardcode those values in code or using elaborate solutions like calculateMetadata or delayRender/continueRender as explained here.