add simple log package

lib/App/Log.pm

+package Log;
+
+use strict;
+use warnings;
+
+use Time::HiRes qw(gettimeofday);
+
+sub i
+{
+    print 'INFO | ' . $_[0] . "\n";
+}
+
+sub w
+{
+    print 'WARNING | ' . $_[0] . "\n";
+}
+
+sub e
+{
+    print 'ERROR | ' . $_[0] . "\n";
+    die;
+}
+
+1;