[connector-builder] add support for specifying timezone for Start Datetime and End Datetime in Incremental Sync

[swrookie]

Topic

connector-builder, timezone

Relevant information

Tell us about the problem you're trying to solve

Currently, Start Datetime and End Datetime for Incremental Sync in connector builder only supports UTC Timezone.

When trying to input datetime with timezone of specific country, the value being sent to api request automatically converts to current datetime in UTC due to MinMaxDatetime validation.

Describe the solution you’d like

In connector builder incremental sync configuration, users should be able to select timezone in the dropdown for each Start and End datetime, just like timezone dropdown when choosing cron as the schedule type in configuring connection.

Datetime inputs then would be converted to UTC timezone for MinMaxDatetime validation internally and after validation is successful, datetime would be used as it was entered for api request.

Are you willing to submit a PR?

Yes.