Add icon sets from LibreOffice

[alextrical]

Using https://github.com/alextrical/LibreOffice-themes-to-glabels-qt to generate an initial set of additional icon sets

There are some missing icons from the source set, so patched with icons from "glabels-flat"
I can make more icons based on the icon set once a theme is selectable

[sur5r]

With my Debian maintainer hat on, may I ask you a favor?

Before these get merged into glabels, please make sure to keep a reference (at least in a README or similar) to those icons, that came from LibreOffice or elsewhere. Tracking authorship is necessary for license compliance, unfortunately, and it would save me A LOT of time if I don't have to hand-compare 1300 files to find out which were created by whom.

[alextrical]

@sur5r Ah, yes no problem and a very good point.
I've added the icon's licence and authors files as provided by LibreOffice's repo, will they suffice for compliance?

[sur5r]

That helps a lot. The only thing that I still can't deduce is, which icons did you create? Or are those now just a 1:1 copy for use with glabels-qt?

[alextrical]

Currently they are all 1:1 copy, bar modifying the metadata for resizing and rotation (where needed)
I will need to make some more icons to complete the themes, but i haven't started that endeavour yet.

I also don't know how I should go about identifying anything that I created that isn't in the origin icon packs/themes

Not sure if it will help, but all of the tooling I have created to convert the LibreOffice themes can be found here:
https://github.com/alextrical/LibreOffice-themes-to-glabels-qt