r/frigate: Add udev rules for coral tpu

Since the _frigate.service_ unit depends on _dev-apex_0.device_,
`/dev/apex_0` needs to have the `systemd` "tag" on its udev device info.
Without this tag, systemd will not "see" the device and thus will not
mark the `.device` unit as active.

roles/frigate/handlers/main.yml

@@ -6,3 +6,8 @@
   service:
     name: frigate
     state: restarted
+
+- name: reload udev
+  command: udevadm control --reload
+- name: trigger udev
+  command: udevadm trigger