Rename neofs to frostfs

Signed-off-by: Yulia Kovshova <y.kovshova@yadro.com>

src/frostfs_testlib/plugins/__init__.py

@@ -0,0 +1,25 @@
+import sys
+from typing import Any
+
+if sys.version_info < (3, 10):
+    # On Python prior 3.10 we need to use backport of entry points
+    from importlib_metadata import entry_points
+else:
+    from importlib.metadata import entry_points
+
+
+def load_plugin(plugin_group: str, name: str) -> Any:
+    """Loads plugin using entry point specification.
+
+    Args:
+        plugin_group: Name of plugin group that contains the plugin.
+        name: Name of the plugin in the group.
+
+    Returns:
+        Plugin class if the plugin was found; otherwise returns None.
+    """
+    plugins = entry_points(group=plugin_group)
+    if name not in plugins.names:
+        return None
+    plugin = plugins[name]
+    return plugin.load()