[FEATURE] Convenience Functionalty for BusinessOpeningHours

[Bibo-Joshi]

What kind of feature are you missing? Where do you notice a shortcoming of PTB?

API 7.2 introduced BusinessOpeningHours and BOHInterval. Parsing this information for different use cases can require some logic on the bot side. It would be nice to have functionality that allows to

• check if the business is open at a given time
• get the opening hours for a given day

Both should be able to deal with timezones

Describe the solution you'd like

Add a method BOH.get_opening_hours_for_day(dtm.date, tzinfo=None) -> tuple[tuple[dtm.datetime, dtm.datetime], …].
The user would provide a specific day and optionally a timezone/tzinfo object and get as return value a sequence of the opening intervals for that day in the desired timezone. If no tzinfo is provided, `BOH.time_zone_namez should be used

Add a method BOH.is_open(dtm.datetime) -> bool, i.e. a method that would allow you to check if the business is open at that specified time. If the parameter is tz-aware, the return value should be considered for that timezone. If it's timezone naive, it should be considered in BOH.time_zone_name.

Describe alternatives you've considered

No response

Additional context

See discussion in #4183

Handling of timezones currently requires additional dependencies like pytz. Once we drop support for Python3.8, we can instead use zoneinfo which as added to the std-lib in py3.9. Adding the 1st-party lib tzdata as required dependency to PTB would probably not be a bummer to me, though I'd also be okay with not doing that and instead giving hints to users that they might need to install that.