Add multiple hosts & restructure things

hosts/vinegar/start-session/home.nix

@@ -0,0 +1,12 @@
+{ pkgs, ... }: {
+  home.file.".local/bin/start-session" = {
+    source = ./start-session;
+    executable = true;
+  };
+
+  home.packages = [
+    pkgs.xwayland
+    pkgs.xorg.xrandr
+    pkgs.gawk
+  ];
+}

hosts/vinegar/start-session/start-session

@@ -0,0 +1,5 @@
+#!/bin/sh
+Xwayland :1 -geometry $(xrandr -q | gawk 'match($0, /([0-9]+x[0-9]+)/, ary) {print ary[1]; exit}') -fullscreen &
+xw_pid=$!
+WAYLAND_DISPLAY= DISPLAY=:1 dbus-launch $1
+kill $xw_pid