Draft: Automatic XLSX export

Summary

Added a function to automatically export records from an Iterable to xlsx.
Addresses #143 / https://gitlab.indiscale.com/caosdb/customers/dimr/management/-/issues/269

Focus

Does this lack any features that are necessary and might have been missed during planning? Can this be used in the intended workflow?

Test Environment

Manual tests, ideally against test data I might not have available.
Additionally, if this needs to work on Windows and there is a working VM somewhere, this should probably also be tested there, as afaik NamedTemporaryFiles are somewhat error-prone on Win.

Check List for the Author

• All automated tests pass
• Reference related issues
• Up-to-date CHANGELOG.md (or not necessary)
• Up-to-date JSON schema (or not necessary)
• Appropriate developer documentation
• Appropriate user documentation
• Tests (or not necessary)
• Annotations in code (Gitlab comments)

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• Appropriate user and developer documentation (or not necessary)
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there specifications? Are they satisfied?

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added ###
 
+- Added table_json_conversion.export_import_xlsx with a public function
+  export_container_to_xlsx, which exports the data of a given Entity
+  Container to a XLSX file.
+
 ### Changed ###
 
 ### Deprecated ###