feat: convert wake-on-lan into a plugin (B20)

drizzle/sqlite/0046_misty_midnight.sql

@@ -0,0 +1,4 @@
+-- mac_address and wol_broadcast_address move to the wake-on-lan plugin's
+-- host settings at boot, after this migration runs. Dropping them here would
+-- delete the data before the copy has a chance to run.
+SELECT 1;