Add Sound Effect

Add a new sound effect WAV file to the remotion-media project.

Required information

Ask the user for:

1. Output filename (e.g. bruh.wav)
2. Source file path (e.g. /Users/jonathanburger/Downloads/source.mp3)
3. Attribution source URL

Steps

1. Detect peak volume of the source file:

   ffmpeg -i <source> -af "volumedetect" -f null - 2>&1 | grep max_volume
   

2. Calculate gain adjustment: target is -3dB peak. If current max is X dB, apply (-3 - X) dB gain.