Bloop should indicate when --watch is waiting for source changes

[olafurpg]

I ran bloop test --watch tests-test in the metadoc repo and when the tests complete the last line that is printed out is

- .semanticdb.json

It would be nice if that line was followed with some message from bloop indicating that bloop is waiting for more source changes, something like

Waiting for source changes... (press ??? to interrupt)

[jvican]

Thanks for the ticket! @rberenguel you may wanna be interested in this ticket too, fix should be two lines of code 😄 ^^

[rberenguel]

@jvican :D I will, I'm still getting used to the development cycle for bloop

[rberenguel]

@olafurpg @jvican I can't reproduce this locally, I get File watching 28 directories... as last message when watching on tests or compile the same.

[rberenguel]

Oh, got it now, the message only appears on first run, does not get repeated on file modified