Add support for collection expiration to @TimeSeries.

[bpfoster]

This will allow setting up automatic removal for time series collections (https://www.mongodb.com/docs/manual/core/timeseries/timeseries-automatic-removal/#set-up-automatic-removal-for-time-series-collections--ttl-), by adding an expireAfterSeconds or expire element to the @TimeSeries annotation. Similar to @Indexed, expireAfterSeconds on will have a default of -1, and will not be used if it is <= 0. An error will be thrown if both expireAterSeconds and expire are defined. expire allows all the same expressions as are supported on @Indexed.

Closes #4099

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[christophstrobl]

Thank you @bpfoster! To avoid the duplication in parsing the duration we're waiting for spring-projects/spring-framework#22474 to land in Framework 6 before bringing the changes in. Thanks for your understanding and patience.

[christophstrobl]

Update - there's a PR (spring-projects/spring-framework#30396) targeting FW 6.1 timeframe.