Kobo v5 support

[NerdyProjects]

This adds a change to support Kobo v5 thumbnails, it also adds an init script to start kfmon on boot.

It still misses the tooling to generate an update.tar as there might be some more testing neccessary anyway.

ToDos

• [x] See if the new thumbnail detection is enough or triggers false positives
• [x] think about proper special character conversion for new thumbnail filenames - as it is only for shortcuts that don't need crazy special char support, it's likely fine as it is. Current conversion list is from a few files I had on my ereader...
• [x] generate update.tar

This change is 

[NerdyProjects]

I added a new kobov5 Makefile target to generate the update zip files for install and uninstall. You have to extract them onto the base of the usb storage.

I also replaced pkill by killall - I hope that's not a problem? As I kept the filename of the uninstaller script kfmon-uninstall.sh it got killed during the uninstall :D

[NerdyProjects]

KFMon-.zip KFMon-Uninstaller.zip

Here are my builds of this branch, is anybody wants to try out :-)

[NiLuJe]

I also replaced pkill by killall - I hope that's not a problem? As I kept the filename of the uninstaller script kfmon-uninstall.sh it got killed during the uninstall :D

Oh, good point ;p.

Nah, should be fine, we only really wanted to kill the actual daemon there.

[NiLuJe]

Thanks!

(I may tweak a few things, so I might ping you to double-check I didn't break anything ;)).

[NiLuJe]

There, pushed a few things, hopefully I didn't break anything ^^.

[NerdyProjects]

I updated to your master branch - it's working fine! thanks for tidying up - I lack a bit of practice there...

[NiLuJe]

No worries, thanks for being willing to work on this and test it in the first place ;).