llama : move end-user examples to tools directory (#13249)

* llama : move end-user examples to tools directory

---------

Co-authored-by: Xuan Son Nguyen <son@huggingface.co>

examples/server/tests/conftest.py

@@ -1,15 +0,0 @@
-import pytest
-from utils import *
-
-
-# ref: https://stackoverflow.com/questions/22627659/run-code-before-and-after-each-test-in-py-test
-@pytest.fixture(autouse=True)
-def stop_server_after_each_test():
-    # do nothing before each test
-    yield
-    # stop all servers after each test
-    instances = set(
-        server_instances
-    )  # copy the set to prevent 'Set changed size during iteration'
-    for server in instances:
-        server.stop()