libTAS won't start if ~/.config/ doesn't exist and won't work properly if ~/.local/share/ doesn't exist

[Perdu]

Very corner case, but I had to fix that for my Dockerfile PR. Error (with root user as it's inside a container):

Cannot create dir "/root/.config/libTAS"
what(): filesystem error: cannot create directory: No such file or directory [/root/.config/libTAS]

I assume this is not a normal behaviour since both ruffle and pcem do fine at creating the folder

Same for ~/.local/share/: libTAS will open but movie loading won't work properly:

tar: /root/.local/share/libTAS/movie: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now