In the SubmodelRepositoryApiHTTPController, added a Content-Disposition header in the getFileByPath method response, so that files that are downloaded from the API have a file-specific name once downloaded. Previously all and any files were downloaded under the name "attachment".
Updated the test for getFile in SubmodelRepositorySubmodelHTTPTestSuite.java by also adding a fileName assertion check.
Description of Changes
Closes #412