Add script to magically make a tarball, bump version to 0.4

Signed-off-by: Ikey Doherty <ikey@solus-project.com>

meson.build

@@ -1,7 +1,7 @@
 project(
     'linux-steam-integration',
     ['c'],
-    version: '0.3',
+    version: '0.4',
     license: [
         'LGPL-2.1',
     ],

mkrelease.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+set -e
+
+git submodule init
+git submodule update
+
+# Script for ikey because he went with meson. *shrug*
+VERSION="0.4"
+NAME="linux-steam-integration"
+git-archive-all.sh --format tar --prefix ${NAME}-${VERSION}/ --verbose -t HEAD ${NAME}-${VERSION}.tar
+xz -9 "${NAME}-${VERSION}.tar"
+
+gpg --armor --detach-sign "${NAME}-${VERSION}.tar.xz"
+gpg --verify "${NAME}-${VERSION}.tar.xz.asc"