feat: add host setup scripts + configs for Intel Alder Lake-N

- scripts/host/setup-host-rustdesk.sh: protect RustDesk ID on host
- scripts/host/README-host.md: instructions for manual apply
- configs/rustdesk2-host.toml.template: config template
- configs/systemd/: systemd units for both VPS and host

configs/rustdesk2-host.toml.template

@@ -0,0 +1,9 @@
+# RustDesk2.toml для хоста Intel Alder Lake-N
+# Публичный сервер для стабильного ID
+rendezvous_server = 'rs-ny.rustdesk.com:21116'
+nat_type = 1
+serial = 0
+unlock_pin = ''
+
+[options]
+local-ip-addr = '<IP хоста>'