Add MimeType

[JakobDev]

Since Appstream has it's own file format, it would be nice to have MimeType for it. Something like this:

<?xml version="1.0" encoding="UTF-8"?>
<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
	<mime-type type="text/x-freedesktop-appstream">
		<comment>Appstream Files</comment>
		<glob pattern="*.appdata.xml"/>
		<glob pattern="*.metadata.xml"/>
	</mime-type>
</mime-info>

Not sure if this is the right place to suggest it.

[ximion]

It is, but in the long run it may make sense to add something like this to the official Freedesktop MIME database. Would also be useful to identify the files not just by file extension but also by the contained XML if that is feasible.
I'll play around with it a bit when I find the time :-)
The nice thing this gives us is an easy way for desktop environments to assign a dedicated icon to these metadata files ;-)