Netmaker add-on: pull prebuilt image from Gitea registry

Home Assistant add-on that joins the instance to a Netmaker network via
netclient. Distributed as a repository add-on using a prebuilt arm64 image
(gitea.savant.io/homeassistant/netmaker) to avoid local buildx.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

netmaker/apparmor.txt

@@ -0,0 +1,45 @@
+#include <tunables/global>
+
+profile netmaker flags=(attach_disconnected,mediate_deleted) {
+  #include <abstractions/base>
+
+  # Capabilities
+  file,
+  signal (send) set=(kill,term,int,hup,cont),
+
+  # S6-Overlay
+  /init ix,
+  /bin/** ix,
+  /usr/bin/** ix,
+  /run/{s6,s6-rc*,service}/** ix,
+  /package/** ix,
+  /command/** ix,
+  /etc/services.d/** rwix,
+  /etc/cont-init.d/** rwix,
+  /etc/cont-finish.d/** rwix,
+  /run/{,**} rwk,
+  /dev/tty rw,
+
+  # Bashio
+  /usr/lib/bashio/** ix,
+  /tmp/** rwk,
+
+  # Access to options.json and other files within your app
+  /data/** rw,
+
+  # Netclient configuration/state (symlinked to /data/netclient)
+  /etc/netclient/{,**} rw,
+
+  # General - capabilities derived from complain mode analysis
+  capability net_bind_service,
+  capability dac_override,
+  capability fsetid,
+  capability setgid,
+  capability setuid,
+  capability chown,
+  capability kill,
+
+  # General - based on Config.yaml
+  capability net_admin,
+  capability net_raw,
+}