Moving utilities for object based support.

Moving the utilities to OOPs supported way to make them more useful and
Robust.

Signed-off-by: Naresh Bannoth <nbannoth@in.ibm.com>

avocado/utils/block_devices/__init__.py

@@ -0,0 +1,13 @@
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#
+# See LICENSE for more details.
+#
+# Copyright: Red Hat Inc. 2024
+# Author: Naresh Bannoth <nbannoth@in.ibm.com>