https://github.com/Whonix/helper-scripts/blob/master/usr/lib/helper-scripts/te_pe_tb_check needs to be split.

sdwdate should not (as currently) just call /usr/lib/helper-scripts/te_pe_tb_check but needs to be internally aware of different states such as "Tor not enabled yet" vs "Tor bootstrap in progress" vs "Tor bootstrap failed".