Mount Iso service for dolphin

[Kwon-Young Choi]

Hello,

I've made a plugin for dolphin to mount or unmount an iso image file using the right-click contextual menu of an iso file.

First, here is the code: https://github.com/kwon-young/mount-iso

I use udisksctl and losetup to do this (See the README for more precision on how this works).

>From what I have read in this bug report https://bugs.kde.org/show_bug.cgi?id=175051, I think there is interest to have this feature by default in dolphin.
However, there seems to be a preference to use fuseiso instead of udisksctl to mount the iso image.
Although using fuseiso is blocked by https://phabricator.kde.org/D21235 so that fuseiso filesystem are detected by dolphin.

Since this is my first time contributing to kde, I have a some questions:

* Should we use fuseiso or udisksctl and why? For now, I have settled on udisksctl because it works well now, but I can modify this code to use fuseiso with no problem, although the user interaction changes because we have asks the user where to mount the fuseiso filesystem.
* In which kde project should this plugin go? For now, I have created a project on github so that anybody can see the code but I suppose if this contribution is accepted, it should move somewhere else.
* How can I open a phabricator diff of this feature?
* Is the gpl v2 licence correct?
* Using QProcess to interface with udisksctl and losetup is not very clean. Can the equivalent be done using the kde Solid framework?

I hope this will interest someone!

Best regards,

Kwon-Young Choi