refactor: rename timeout string builder method argument to timeout_ms

To make timeout units explicit.

Author: SergeyCP

src/smartinspect/connections/builders/tcp_protocol_connection_string_builder.py

@@ -20,6 +20,6 @@ def set_port(self, port: int) -> Self:
         self._parent.cb.add_option("port", port)
         return self
 
-    def set_timeout(self, timeout: int) -> Self:
-        self._parent.cb.add_option("timeout", timeout)
+    def set_timeout(self, timeout_ms: int) -> Self:
+        self._parent.cb.add_option("timeout", timeout_ms)
         return self