feat: debug logging

Closes coop-cloud/organising#164.

cli/cli.go

@@ -68,8 +68,18 @@ func RunApp(version, commit string) {
 			},
 		},
 	}
+
 	app.EnableBashCompletion = true
 
+	app.Before = func(c *cli.Context) error {
+		if Debug {
+			logrus.SetLevel(logrus.DebugLevel)
+		}
+		return nil
+	}
+
+	logrus.Debugf("Flying abra version '%s', commit '%s', enjoy the ride", version, commit)
+
 	if err := app.Run(os.Args); err != nil {
 		logrus.Fatal(err)
 	}