Add border wait time

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/request-a-feature/add-border-wait-time/
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I really enjoy the planner when it shows me accurate times when I would be at given destinations and chargers.
However, when I'm crossing borders where I know there would be some wait time I would like to be able to add that wait time without planning charger stops around the border as I cannot charge while waiting on the border crossing line.
Currently, the UI for adding a stop with wait time is cumbersome and doesn't allow easy adding of certain duration of wait times at any point.