Precompile bots before running tests

Just precompiling stuff may take many seconds which results in time
out of the whole test file. Fixed by precomping the stuff before
running it.

Author: AlexDaniel

t/lib/Testable.pm6

@@ -56,7 +56,9 @@ class Testable {
         );
         start $!irc-client.run;
 
-        $!bot-proc = Proc::Async.new: ‘perl6’, ‘./bin/’ ~ $bot ~ ‘.p6’;
+        my $executable = ‘./bin/’ ~ $bot ~ ‘.p6’;
+        run :env(|%*ENV, PERL6LIB => ‘lib’), <perl6 -c -->, $executable; # precompahead
+        $!bot-proc = Proc::Async.new: <perl6 -->, $executable;
         END .kill with $!bot-proc;
         $!bot-proc.bind-stdin: ‘config.json’.IO.open || ‘config-default.json’.IO.open;
         start react {