feat(#21): Add class Plaxis3DOutputController.

src/plxcontroller/plaxis_3d_output_controller.py

@@ -0,0 +1,24 @@
+from __future__ import annotations
+
+from plxscripting.plxproxy import PlxProxyGlobalObject
+from plxscripting.server import Server
+
+
+class Plaxis3DOutputController:
+    def __init__(self, server: Server):
+        """Creates a new Plaxis3DOutputController instance based on a server connection with the Plaxis program.
+
+        Args:
+            server (Server): the server connection with the Plaxis program.
+        """
+        self.server = server
+
+    @property
+    def s_o(self) -> Server:
+        """Returns the server object. This is a typical alias for the server object."""
+        return self.server
+
+    @property
+    def g_o(self) -> PlxProxyGlobalObject:
+        """Returns the global project object. This is a typical alias for the global project object."""
+        return self.server.plx_global