Support recurrence for TimeWindowFilter

[Zhiyuan Liang (zhiyuanliang-ms)]

Why this PR?

#194

Visible changes

Add-on "Recurrence" parameter for TimeWindowFilter using Outlook-style schema:
https://learn.microsoft.com/en-us/graph/outlook-schedule-recurring-events#using-patterns-and-ranges-to-create-recurring-events

The modification we made to the original outlook schema:

1. We remove the "StartDate" property in the RecurrenceRange and we force the "Start" property of the time window to be a valid first occurrence (there are validations for "Start" property, checking whether it follows the recurrence pattern).
2. We remove the "RecurrenceTimeZone" property in the RecurrenceRange and we will use the UTC offset in the "Start" property.
3. We will only support "Daily" and "Weekly" recurrence pattern type: Support recurrence for TimeWindowFilter #266 (comment)

Some discussion can be found in #256

Other comments

The main logic of how to check whether current time is within any recurring time window:

1. Find the previous occurrence of the recurring time window, let's call it prevOccurrenceStart
2. Check whether the current time: time is within the time window: prevOccurrenceStart ~ prevOccurrenceStart + End - Start

[Zhenlan Wang (zhenlan)]

We probably should make all these const strings public. You have the RecurrencePattern public, but not their values.

[ivywei0125]

Shall we check if there's an entry in cache?

[Zhiyuan Liang (zhiyuanliang-ms)]

I just sent a PR #445 to test it.