chore: add documentation RI

Code functionality left unchanged, only added docs where missing

close: N25B-298

src/robot_interface/endpoints/socket_base.py

@@ -4,16 +4,27 @@ import zmq
 
 
 class SocketBase(object):
+    """
+    Base class for endpoints associated with a ZeroMQ socket.
+
+    :ivar identifier: The identifier of the endpoint.
+    :type identifier: str
+
+    :ivar port: The port used by the socket, set by `create_socket`.
+    :type port: int | None
+
+    :ivar socket: The ZeroMQ socket object, set by `create_socket`.
+    :type socket: zmq.Socket | None
+
+    :ivar bound: Whether the socket is bound or connected, set by `create_socket`.
+    :type bound: bool | None
+    """
     __metaclass__ = ABCMeta
 
     name = None
     socket = None
 
     def __init__(self, identifier):
-        """
-        :param identifier: The identifier of the endpoint.
-        :type identifier: str
-        """
         self.identifier = identifier
         self.port = None  # Set later by `create_socket`
         self.socket = None  # Set later by `create_socket`