azure-dynamic-sessions: add Python REPL tool (#21264)

Adds a Python REPL that executes code in a code interpreter session
using Azure Container Apps dynamic sessions.

---------

Co-authored-by: Erick Friis <erick@langchain.dev>

libs/partners/azure-dynamic-sessions/tests/integration_tests/test_compile.py

@@ -0,0 +1,7 @@
+import pytest
+
+
+@pytest.mark.compile
+def test_placeholder() -> None:
+    """Used for compiling integration tests without running any real tests."""
+    pass