Create releasenotes page for tempest 45.0.0

Depends-On: https://review.opendev.org/c/openstack/releases/+/959919

Change-Id: I582d1fbd99053f857f04e4d9b3dce9a9e84a4f1b
Signed-off-by: Ghanshyam Maan <gmaan@ghanshyammann.com>
diff --git a/releasenotes/source/v45.0.0.rst b/releasenotes/source/v45.0.0.rst
new file mode 100644
index 0000000..4183a63
--- /dev/null
+++ b/releasenotes/source/v45.0.0.rst
@@ -0,0 +1,6 @@
+=====================
+v45.0.0 Release Notes
+=====================
+
+.. release-notes:: 45.0.0 Release Notes
+   :version: 45.0.0