make python app load a bit eariler, making startup a bit faster

Azaion.Inference/credentials.pyx

@@ -0,0 +1,17 @@
+from msgpack import unpackb
+
+cdef class Credentials:
+
+    def __init__(self, str email, str password, str folder):
+        self.email = email
+        self.password = password
+        self.folder = folder
+
+    @staticmethod
+    cdef from_msgpack(bytes data):
+        unpacked = unpackb(data, strict_map_key=False)
+        return Credentials(
+            unpacked.get("Email"),
+            unpacked.get("Password"),
+            unpacked.get("Folder"))
+