update AI initializing

rework AIAvailabilityStatus events to mediatr

Azaion.Inference/ai_availability_status.pyx

@@ -0,0 +1,36 @@
+cimport constants_inf
+import msgpack
+
+AIStatus2Text = {
+    AIAvailabilityEnum.NONE: "None",
+    AIAvailabilityEnum.DOWNLOADING: "Downloading",
+    AIAvailabilityEnum.CONVERTING: "Converting",
+    AIAvailabilityEnum.UPLOADING: "Uploading",
+    AIAvailabilityEnum.ENABLED: "Enabled",
+    AIAvailabilityEnum.ERROR: "Error",
+}
+
+cdef class AIAvailabilityStatus:
+    def __init__(self):
+        self.status = AIAvailabilityEnum.NONE
+        self.error_message = None
+
+    def __str__(self):
+        status_text = AIStatus2Text.get(self.status, "Unknown")
+        error_text = self.error_message if self.error_message else ""
+        return f"{status_text} {error_text}"
+
+    cdef bytes serialize(self):
+        return msgpack.packb({
+            "s": self.status,
+            "m": self.error_message
+        })
+
+    cdef set_status(self, AIAvailabilityEnum status, str error_message=None):
+        self.status = status
+        self.error_message = error_message
+        if error_message is not None:
+            constants_inf.logerror(<str>error_message)
+        else:
+            constants_inf.log(<str>str(self))
+