App Configuration: recurring time window filter

[ivywei0125]

Add "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

Example:

feature-management:
  feature-flags:
    feature-v:
      enabled-for:
        -
         name: TimeWindowFilter
          parameters:
            start: "Fri, 22 Mar 2024 20:00:00 GMT",
            end: "Mon, 01 July 2019 00:00:00 GMT",
            recurrence:
              pattern:
                type: "Daily",
                interval: 1
              range:
                type: "NoEnd"

The main logic of how to check whether current time is within any recurring time window: Find the previous occurrence of the recurring time window, let's call it prevOccurrenceStart Check whether the current time: time is within the time window: prevOccurrenceStart ~ prevOccurrenceStart + End - Start

[azure-sdk]

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com.azure.spring:spring-cloud-azure-feature-management