add ramdisk, load AI model to ramdisk and start recognition from it

rewrite zmq to DEALER and ROUTER
add GET_USER command to get CurrentUser from Python
all auth is on the python side
inference run and validate annotations on python

Azaion.AI/user.pyx

@@ -0,0 +1,15 @@
+import msgpack
+
+cdef class User:
+
+    def __init__(self, str id, str email, RoleEnum role):
+        self.id = id
+        self.email = email
+        self.role = role
+
+    cdef bytes serialize(self):
+        return msgpack.packb({
+            "i": self.id,
+            "e": self.email,
+            "r": self.role
+        })