Insteon: Add Failure Callbacks to Add, Delete and Update Links

[krkeegan]

Currently if an add, delete or update link fails, the failure is called out in the print log, but only at the time of the error. As a result, if a failure occurs during a sync_links or delete_orphans call to the PLM the failures will often be buried within the long print log output. These failure can easily be missed.

As a solution, the errors should be gathered and displayed at the end of the batch process similar to how they are displayed for scan_all_links. Some of the foundational logic for this already exists for sync links, the failure call back just needs to be passed down through the subroutine calls.

Delete_Orphans does not contain any logic for this and would need to be supplemented.