[Bug Report] ffmpeg does not work from path with spaces

[MinasukiHikimuna]

Some parts of the bug report are not precise as I am opening this on behalf of a Discord user at the request of WithoutPants. The main gist of the issue is present. The original discussion can be found at: https://discord.com/channels/559159668438728723/559159931505213440/1277893370320257078

Describe the bug A user in Discord has ffmpeg set to path C:\Apps and Programs\ffmpeg-2024-08-26\bin\ffmpeg.exe. This caused the following error log:

[transcode] error generating DASH manifest: FFProbe encountered an error with <\NAS\Studios\Example Studio\Example File.mp4>.
Error JSON:
{
    "error": {
        "code": -22,
        "string": "Invalid argument"
    }
}

Path can't be found due to spaces not being wrapped in quotes.

Expected behavior Stash should put quotes around ffmpeg path in Application Paths.