* Only use datetimeoffset in API
* Updated publish endpoint to take schedule information
* Fixed test builds
* OpenApi updates
* Update OpenApi schema
* Fixed issues with publishing.
* Added validation before publishing. Had to move a lot of classes to core.
* added missing files
* Added validation info to error
* Typo
* Clean up and adding missing result
* Updating to AvailableCultures instead of PublishedCultures
* Handle time needs to be in the future
* validate only cultures that needs to be published
* Fix typos
* Filter out cultures that we are not trying to publish from the validation errors
* Don't filter out only the available cultures, to accommodate non-created variants
* Only allow publish of existing cultures
* Fixed issues found in test
* fixed build
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Co-authored-by: Elitsa <elm@umbraco.dk>
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