Fix sway session setup and migrate waybar to sway modules

- Start xdg-desktop-portal-wlr and sway-session.target for proper portal init
- Re-enable systemd/dbus environment import for Wayland session vars
- Move hypridle startup earlier
- Switch waybar left modules from hyprland/* to sway/*

.config/sway/waybar/config.jsonc

@@ -2,9 +2,9 @@
 {
     "spacing": 2, // Gaps between modules (4px)
     "modules-left": [
-        "hyprland/workspaces",
-        "hyprland/submap",
-        "hyprland/window"
+        "sway/workspaces",
+        "sway/submap",
+        "sway/window"
     ],
     //"modules-center": [
         //"sway/window"