Add install scripts (Flatpak) (#471)

Co-authored-by: ReenigneArcher <42013603+ReenigneArcher@users.noreply.github.com>

packaging/linux/flatpak/dev.lizardbyte.sunshine.yml

@@ -208,3 +208,7 @@ modules:
       - sed -r -z -i -e
         's/("((do)|(undo)|(cmd)|(detached))"\s*:\s*\[?\n*\s*")(.*")/\1flatpak-spawn --host \7/gm'
         /app/share/sunshine/apps.json
+      - sed -i
+        's%/app/bin/sunshine%flatpak run dev.lizardbyte.sunshine\nExecStop=flatpak kill dev.lizardbyte.sunshine%g'
+        /app/share/sunshine/systemd/user/sunshine.service
+      - install -D $FLATPAK_BUILDER_BUILDDIR/packaging/linux/flatpak/scripts/* /app/bin

packaging/linux/flatpak/scripts/additional-install.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# User Service
+mkdir -p ~/.config/systemd/user
+cp /app/share/sunshine/systemd/user/sunshine.service $HOME/.config/systemd/user/sunshine.service
+echo Sunshine User Service has been installed.
+echo Use [systemctl --user enable sunshine] once to autostart Sunshine on login.
+
+# Udev rule and input group
+UDEV=$(cat /app/share/sunshine/udev/rules.d/85-sunshine.rules)
+echo Configuring mouse permission.
+flatpak-spawn --host pkexec sh -c "usermod -a -G input $USER && echo '$UDEV' > /etc/udev/rules.d/85-sunshine.rules"
+echo Restart computer for mouse permission to take effect.

packaging/linux/flatpak/scripts/remove-additional-install.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+# User Service
+systemctl --user stop sunshine
+rm $HOME/.config/systemd/user/sunshine.service
+systemctl --user daemon-reload
+echo Sunshine User Service has been removed.
+
+# Udev rule and input group
+flatpak-spawn --host pkexec sh -c "gpasswd -d $USER input && rm /etc/udev/rules.d/85-sunshine.rules"
+echo Mouse permission removed. Restart computer to take effect.