Merge pull request #4039 from xarbit/flatpak-for-linux-appstore

upstream files required files for FlatHub

resources/data/com.prusa3d.PrusaSlicer.desktop

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+[Desktop Entry]
+Name=PrusaSlicer
+GenericName=3D Printing Software
+Icon=com.prusa3d.PrusaSlicer
+Exec=prusa-slicer %F
+Terminal=false
+Type=Application
+MimeType=model/stl;model/x-wavefront-obj;model/3mf;model/x-geomview-off;application/x-amf;
+Categories=Graphics;3DGraphics;Engineering;
+Keywords=3D;Printing;Slicer;slice;3D;printer;convert;gcode;stl;obj;amf;SLA
+StartupNotify=false
+StartupWMClass=prusa-slicer

resources/data/com.prusa3d.PrusaSlicer.metainfo.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop">
+    <id>com.prusa3d.PrusaSlicer</id>
+    <launchable type="desktop-id">com.prusa3d.PrusaSlicer.desktop</launchable>
+    <provides>
+        <id>prusa-slicer.desktop</id>
+    </provides>
+    <name>PrusaSlicer</name>
+    <summary>Powerful 3D printing slicer optimized for Prusa printers</summary>
+    <metadata_license>0BSD</metadata_license>
+    <project_license>AGPL-3.0-only</project_license>
+    <description>
+        <p>
+            PrusaSlicer takes 3D models (STL, OBJ, AMF) and converts them into G-code
+            instructions for FFF printers or PNG layers for mSLA 3D printers. It's
+            compatible with any modern printer based on the RepRap toolchain, including all
+            those based on the Marlin, Prusa, Sprinter and Repetier firmware. It also works
+            with Mach3, LinuxCNC and Machinekit controllers.
+        </p>
+        <p>
+            PrusaSlicer is based on Slic3r by Alessandro Ranelucci and the RepRap community.
+        </p>
+        <p>
+            What are some of PrusaSlicer's main features?
+        </p>
+        <ul>
+            <li>multi-platform (Linux/Mac/Win) and packaged as standalone-app with no dependencies required</li>
+            <li>complete command-line interface to use it with no GUI</li>
+            <li>multi-material (multiple extruders) object printing</li>
+            <li>multiple G-code flavors supported (RepRap, Makerbot, Mach3, Machinekit etc.)</li>
+            <li>ability to plate multiple objects having distinct print settings</li>
+            <li>multithread processing</li>
+            <li>STL auto-repair (tolerance for broken models)</li>
+            <li>wide automated unit testing</li>
+        </ul>
+    </description>
+    <url type="homepage">https://www.prusa3d.com/prusaslicer/</url>
+    <url type="help">https://help.prusa3d.com</url>
+    <url type="bugtracker">https://github.com/prusa3d/PrusaSlicer/issues</url>
+    <screenshots>
+        <screenshot type="default">
+            <image>https://user-images.githubusercontent.com/590307/78981854-24d07580-7b21-11ea-9441-77923534a659.png</image>
+        </screenshot>
+        <screenshot>
+            <image>https://user-images.githubusercontent.com/590307/78981860-2863fc80-7b21-11ea-8c2d-8ff79ced2578.png</image>
+        </screenshot>
+        <screenshot>
+            <image>https://user-images.githubusercontent.com/590307/78981862-28fc9300-7b21-11ea-9b0d-d03e16b709d3.png</image>
+        </screenshot>
+    </screenshots>
+    <content_rating type="oars-1.1" />
+    <releases>
+        <release version="2.2.0" date="2020-03-21">
+            <description>
+                <p>This is final release of PrusaSlicer 2.2.0 introducing SLA hollowing and hole drilling, support for 3rd party printer vendors, 3Dconnexion support, 
+                automatic variable layer height, macOS dark mode support, greatly improved ColorPrint feature and much, much more.
+                Several bugs found in the previous release candidate are fixed in this final release. See the respective change logs of the previous releases for all the 
+                new features, improvements and bugfixes in the 2.2.0 series.</p>
+            </description>
+        </release>
+  </releases>
+</component>