* Working import/export media/document types
* WIP
* Refactoring of import doctype/media types
- added analyze endpoint to extract relevant data without fully processing the file
- split up import endpoints into POST & PUT
- removed availableAtAction as the new endpoint allows clients to call the POST/PUT endpoints with confidence
- Added a new service that is responsible for turning temp files into Import compatible XML and being able to extracty partial information from it
* Wrap persistance access in scopes
* Typos, formatting, clean-up
* PR feedback
* update openapi spec
* Changed deleteFile flag to _temporaryFileService.EnlistDeleteIfScopeCompletes
* Itty bitty typo
* Moved magic cleanup into its own method so orchestration can decide when.
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Co-authored-by: Sven Geusens <sge@umbraco.dk>
Co-authored-by: kjac <kja@umbraco.dk>
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