this "splits" the output into sections so it's easier to attribute what
is curretly run. useful for debugging failures. in the end, the script
reports total CPU time it took to run the update.
the tor service provides hidden services for bitcoin and lightning.
in the latter case, both P2P and RPC/REST.
the commit also starts a new directory files. the idea is to mirror
config files layout in the target system.
the apply.sh script should assume current directory is arbitrary after
executing each step: base, bitcoin, lnd and so on.
this commit simply changes current dir to the repo root before executing
every step.
alex