Add mesa-freeworld plugin

See also #110

plugins/mesa-freeworld.plugin/install.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+for i in va vdpau ; do
+  _package=0
+  rpm -q --quiet mesa-${i}-drivers
+  _package=$?
+  if [ ${_package} == 0 ] ; then
+    dnf swap mesa-${i}-drivers mesa-${i}-drivers-freeworld -y
+  else
+    dnf install mesa-${i}-drivers-freeworld -y
+  fi
+done
+

plugins/mesa-freeworld.plugin/metadata.json

@@ -0,0 +1,18 @@
+{
+	"icon": "mesa-freeworld",
+	"label": "mesa-freeworld",
+	"description": "Video HW codec drivers from mesa (AMD mostly)",
+	"license": "MIT",
+	"category": "Drivers",
+	"scripts": {
+		"exec": {
+			"label": "Install",
+			"command": "run-as-root -s install.sh"
+		},
+		"undo": {
+			"label": "Remove",
+			"command": "run-as-root -s remove.sh"
+		},
+		"status": { "command": "rpm --quiet --query mesa-va-drivers mesa-vdpau-drivers" }
+	}
+}

plugins/mesa-freeworld.plugin/remove.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+dnf remove mesa-va-drivers-freeworld mesa-vdpau-drivers-freeworld -y
+