Make an entire new documentation section about "Captions":

• Importing captions: fetch() files and if it is an SRT, can use the parseSrt() function.
• Generating captions: We have 3 packages: @remotion/openai-whisper, @remotion/whisper-web and @remotion/install-whisper-cpp. Present them as options, and as a custom solution, recommend that captions are being generated in the format of the Caption type (from @remotion/captions)