Add "Applications" directory to XDG user directory specification

[guoyunhe]

Currently, AppImageLauncher uses Applications directory to contain AppImages. However, this isn't a standard that recognized by other apps. Applications folder name is hard-coded and doesn't support localization, e.g. 应用 in Chinese.

So I created a MR to freedesktop.org to support Applications directory in XDG:

https://gitlab.freedesktop.org/xdg/xdg-user-dirs/-/merge_requests/27

Hopefully, all AppImage stores and utilities will use same directory to keep AppImages.

[probonopd]

Thank you @guoyunhe. Please ping me once it is merged in XDG.

[TheAssassin]

I second this. I would like this to be standardized. Good luck with your MR.

(Side note: why does one have to sign up and log in to see this MR... Edit: doesn't seem to be necessary now...)

[TheAssassin]

Another idea, not sure how easily possible it is: It would be just as helpful to also have some XDG_APPLICATION_DIRS or similar which tools like appimagelauncherd and appimaged could search to find applications to be integrated. I would still use the main dir as a target dir with AppImageLauncher, though.