move xdg directories to the default location.

a lot of applications seem to hardcode this location, so it's better to
have something default, or default-adjasoned.

.config/polybar/modules/datetime.ini

@@ -0,0 +1,15 @@
+[datetime]
+type             = internal/date
+label            = %date%
+label-foreground = ${colours.primary}
+
+[module/date]
+inherit  = datetime
+interval = 60
+date     = %d/%m/%Y
+
+[module/time]
+inherit  = datetime
+interval = 1
+date     = %H:%M
+date-alt = %H:%M:%S