changefeedccl: support end_time option with parquet format

This change adds support for the `end_time` changefeed
options when using `format=parquet`. No significant code
changes were needed to enable this feature.

Closes: cockroachdb#103129
Closes: cockroachdb#99028
Epic: CRDB-27372
Release note (enterprise change): Changefeeds now officially
support the parquet format at specificiation version 2.6.
It is only usable with the cloudstorage sink.

The syntax to use parquet is like the following:
`CREATE CHANGEFEED FOR foo INTO `...` WITH format=parquet`

It supports all standard changefeed options and features
including CDC transformations, except it does not support the
`topic_in_value` option.

pkg/ccl/changefeedccl/changefeedbase/options.go

@@ -433,7 +433,7 @@ var InitialScanOnlyUnsupportedOptions OptionsSet = makeStringSet(OptEndTime, Opt
 
 // ParquetFormatUnsupportedOptions is options that are not supported with the
 // parquet format.
-var ParquetFormatUnsupportedOptions OptionsSet = makeStringSet(OptEndTime, OptTopicInValue)
+var ParquetFormatUnsupportedOptions OptionsSet = makeStringSet(OptTopicInValue)
 
 // AlterChangefeedUnsupportedOptions are changefeed options that we do not allow
 // users to alter.