Add bus system for handling events hw/pulse/docker (#2999)

* Add bus system for handling events hw/pulse/docker

* give sound update back

* register events

* Add tests

* Add debug logger

* Update supervisor/coresys.py

Co-authored-by: Joakim Sørensen <joasoe@gmail.com>

Co-authored-by: Joakim Sørensen <joasoe@gmail.com>

supervisor/coresys.py

@@ -28,7 +28,7 @@ if TYPE_CHECKING:
     from .hardware.module import HardwareManager
     from .hassos import HassOS
     from .homeassistant.module import HomeAssistant
-    from .host import HostManager
+    from .host.manager import HostManager
     from .ingress import Ingress
     from .jobs import JobManager
     from .misc.scheduler import Scheduler
@@ -40,6 +40,7 @@ if TYPE_CHECKING:
     from .store import StoreManager
     from .supervisor import Supervisor
     from .updater import Updater
+    from .bus import Bus
 
 
 T = TypeVar("T")
@@ -88,6 +89,7 @@ class CoreSys:
         self._resolution: Optional[ResolutionManager] = None
         self._jobs: Optional[JobManager] = None
         self._security: Optional[Security] = None
+        self._bus: Optional[Bus] = None
 
         # Set default header for aiohttp
         self._websession._default_headers = MappingProxyType(
@@ -352,6 +354,20 @@ class CoreSys:
             raise RuntimeError("DBusManager already set!")
         self._dbus = value
 
+    @property
+    def bus(self) -> Bus:
+        """Return Bus object."""
+        if self._bus is None:
+            raise RuntimeError("Bus not set!")
+        return self._bus
+
+    @bus.setter
+    def bus(self, value: Bus) -> None:
+        """Set a Bus object."""
+        if self._bus:
+            raise RuntimeError("Bus already set!")
+        self._bus = value
+
     @property
     def host(self) -> HostManager:
         """Return HostManager object."""
@@ -540,9 +556,14 @@ class CoreSysAttributes:
 
     @property
     def sys_core(self) -> Core:
-        """Return core object."""
+        """Return Core object."""
         return self.coresys.core
 
+    @property
+    def sys_bus(self) -> Bus:
+        """Return Bus object."""
+        return self.coresys.bus
+
     @property
     def sys_plugins(self) -> PluginManager:
         """Return PluginManager object."""