Add mention about possibility to start hypridle, hyprpaper and hyprpolkit with systemd services (#842)

pages/Hypr Ecosystem/hypridle.md

@@ -9,7 +9,7 @@ hypridle is Hyprland's idle management daemon.
 
 Configuration is done via the config file at `~/.config/hypr/hypridle.conf`. A
 config file is required; hypridle won't run without one. To run hypridle at
-startup, edit `hyprland.conf` and add: `exec-once = hypridle`.
+startup, edit `hyprland.conf` and add: `exec-once = hypridle`. If Hyprland is started as a systemd service, you can use `systemctl --user enable --now hypridle.service`.
 
 ### General
 

pages/Hypr Ecosystem/hyprpaper.md

@@ -121,7 +121,7 @@ preload another and set it to your monitor(s). It has the same syntax as
 ### Run at startup
 
 To run hyprpaper at startup edit `hyprland.conf` and add: `exec-once =
-hyprpaper`.
+hyprpaper`. If you start Hyprland as a systemd service, you can also use `systemctl --user enable --now hyprpaper.service` command.
 
 ### Misc options
 

pages/Hypr Ecosystem/hyprpolkitagent.md

@@ -14,6 +14,8 @@ or use a different agent, e.g. [KDE's one](https://github.com/KDE/polkit-kde-age
 Add `exec-once = systemctl --user start hyprpolkitagent` to your Hyprland config and restart hyprland.
 (obviously change that to whatever you are using if you are not using the hypr one)
 
+If Hyprland is started as a systemd service, you can autostart for polkit with the command `systemctl --user enable --now hyprpolkitagent.service`.
+
 On distributions that use a different init system, such as Gentoo, it may be
 necessary to use
 `exec-once=/usr/lib64/libexec/hyprpolkitagent` instead.