Adding provider support for Drift Schedules and Ttl Schedules

[IaroslavTitov]

Summary

• Adding schema for drift and ttl schedules
• Adding pulumi service resources for both
• Extended schedule client to be able to call C and U operations for drift and schedules
• Moved some functionality into shared functions to reuse between raw, drift and ttl schedules

Testing

• Tested locally using DotNet SDK
• Creating, Updating, Destroying works as expected
• Verified in console schedules are created and showing up

    var drift = new DriftSchedule(
        "Drift Schedule 1",
        new DriftScheduleArgs{
            Organization = "IaroslavTitov",
            Project = "PulumiDotnet",
            Stack = "SdkTest3",
            ScheduleCron = "0 8 * * 0",
            AutoRemediate = false
        }
    );

    var ttl = new TtlSchedule(
        "Ttl Schedule 1",
        new TtlScheduleArgs{
            Organization = "IaroslavTitov",
            Project = "PulumiDotnet",
            Stack = "SdkTest3",
            Timestamp = "2026-01-01T00:00:00Z",
            DeleteAfterDestroy = true
        }
    );
    ```

[komalali]

deleteAfterDestroy is missing from the outputs

[IaroslavTitov]

Great catch, adding