upgpkg: discord-electron 0.0.27-2

Update Discord launcher script (Original by Zoddo)
Add libxss as dependency to fix Discord corruption warning
Add install script to notify user about discord-flags.conf
Remove duplicate Path variable in .desktop file
Update contributor list

discord-electron/discord-launcher.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+flags_file="${XDG_CONFIG_HOME:-$HOME/.config}/@PKGNAME@-flags.conf"
+
+declare -a flags
+
+if [[ -f "${flags_file}" ]]; then
+	mapfile -t < "${flags_file}"
+else
+	cat > "${flags_file}" <<EOF
+#--ignore-gpu-blacklist
+#--enable-gpu-rasterization
+#--enable-zero-copy
+EOF
+fi
+
+for line in "${MAPFILE[@]}"; do
+	if [[ ! "${line}" =~ ^[[:space:]]*#.* ]]; then
+		flags+=("${line}")
+	fi
+done
+
+exec /usr/bin/electron@ELECTRON@ \
+	/usr/lib/@PKGNAME@/app.asar \
+	--ozone-platform-hint=auto \
+	"${flags[@]}" "$@"