toasterui: disable autocommit for build logging

toasterui: disable autocommit for build logging

This patch disables autocommit for inserting build data,
effectively updating all build data in a single transaction.

This is a purely performance improvement patch, as the transaction
will always be commited.

Similar manual transaction handling in the layer source update
method. Added feedback messages during update method.

[YOCTO #7140]

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>