Datetime operations and formatting.

[maveec]

Would it be possible to add support to datetime operations?
The result I would like to achieve is to apply a datetime operation to a datetime global variable and then formatting it when building the URL for the API call.
This would be something similar to the following:
${(__to+1d): date:YYYY-MM-DD}:
i.e adding one day to __to and then formatting it.
I opened a discussion in Grafana GitHub too but probably this might be handled directly from the plugin itself as well.
grafana/grafana#40929