This commit fixes a couple of issues that only occur on the branch we
use for minor releases. The branch doesn't contain all refactors and
cleanups so a couple of very minor things need to be fixed.
Because we don't have all new features of the master branch we also
can't apply the fuzz corpora for the master branch as that can lead to
false positives.
This commit fixes the display of the amount when
selecting utxos for the sendcoins command and
combining it with the `-sweepall` flag. Prior this
would show the full balance of the wallet. Now it
shows the total amount of the selected utxos.
We want to export some of our CLI code to re-use in other projects. But
in Golang you cannot import code from a `main` package.
So we need to move the actual code into its own package and only have
the `func main()` in the `main` package.
