config: add bluetooth seat-monitoring feature

src/config/wireplumber.conf

@@ -234,6 +234,10 @@ wireplumber.components = [
     type = virtual, provides = monitor.alsa-midi.monitoring,
     requires = [ api.file-monitor ]
   }
+  {
+    type = virtual, provides = monitor.bluetooth.seat-monitoring,
+    requires = [ support.logind ]
+  }
 
   ## Device monitors
   {
@@ -246,13 +250,13 @@ wireplumber.components = [
     name = monitors/bluez.lua, type = script/lua
     provides = monitor.bluez
     requires = [ support.lua-scripting, support.export-core ]
-    wants = [ support.logind ]
+    wants = [ monitor.bluetooth.seat-monitoring ]
   }
   {
     name = monitors/bluez-midi.lua, type = script/lua
     provides = monitor.bluez-midi
     requires = [ support.lua-scripting, support.export-core ]
-    wants = [ support.logind ]
+    wants = [ monitor.bluetooth.seat-monitoring ]
   }
   {
     name = monitors/alsa-midi.lua, type = script/lua

src/scripts/monitors/bluez-midi.lua

@@ -13,6 +13,7 @@ defaults.properties = Json.Object {}
 defaults.servers = Json.Array { "bluez_midi.server" }
 
 config = {}
+config.seat_monitoring = Core.test_feature ("monitor.bluetooth.seat-monitoring")
 config.properties = Conf.get_section (
     "monitor.bluetooth-midi.properties", defaults.properties): parse ()
 config.servers = Conf.get_section (
@@ -136,7 +137,9 @@ function createServers()
   return servers
 end
 
-logind_plugin = Plugin.find("logind")
+if config.seat_monitoring then
+  logind_plugin = Plugin.find("logind")
+end
 if logind_plugin then
   -- if logind support is enabled, activate
   -- the monitor only when the seat is active

src/scripts/monitors/bluez.lua

@@ -14,6 +14,7 @@ defaults = {}
 defaults.properties = Json.Object {}
 
 config = {}
+config.seat_monitoring = Core.test_feature ("monitor.bluetooth.seat-monitoring")
 config.properties = Conf.get_section (
     "monitor.bluetooth.properties", defaults.properties): parse ()
 
@@ -380,7 +381,9 @@ function createMonitor()
   return monitor
 end
 
-logind_plugin = Plugin.find("logind")
+if config.seat_monitoring then
+  logind_plugin = Plugin.find("logind")
+end
 if logind_plugin then
   -- if logind support is enabled, activate
   -- the monitor only when the seat is active