Adds ContentType to setFileValue

[aaronzi]

Description of Changes

This PR adds the contentType parameter to the setFileValue method, allowing it to automatically set the content type when using the attachment endpoint. The implementation follows the same pattern as setThumbnail in the AAS Service.

[Copilot]

Pull Request Overview

This PR enhances the file upload functionality by adding a new contentType parameter to the setFileValue method so that file uploads can automatically include MIME type information. The changes span service interfaces, controller endpoints, client APIs, backend operations, and tests to update method signatures and documentation accordingly.

• Updated service and repository interfaces to include a contentType parameter.
• Modified controllers and client APIs to pass along the content type.
• Revised tests and documentation to verify the new behavior.

Reviewed Changes

Copilot reviewed 24 out of 24 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
basyx.submodelservice-http/SubmodelServiceHTTPApiController.java	Updated controller to pass file.getContentType() to setFileValue.
basyx.submodelservice-feature-operation-dispatching/AbstractSubmodelServiceDecorator.java	Propagated contentType parameter in decorator method.
basyx.submodelservice-feature-mqtt/MqttSubmodelService.java	Updated method signature to include contentType.
basyx.submodelservice-feature-authorization/AuthorizedSubmodelService.java	Adjusted setFileValue to forward contentType after permission check.
basyx.submodelservice-core/SubmodelServiceSuite.java	Modified tests to pass a MIME type alongside file streams.
basyx.submodelservice/SubmodelService.java	Updated interface and Javadoc to include contentType.
basyx.submodelservice-client/SubmodelServiceApi.java & ConnectedSubmodelService.java	Updated client API to build multipart requests with a provided contentType.
basyx.submodelservice-backend/SubmodelFileOperations.java & CrudSubmodelService.java	Updated file persistence logic to use the new contentType when creating FileMetadata and FileBlobValue.
basyx.submodelrepository (and submodules)	Updated repository methods, API controllers, and tests to include contentType for file operations.
basyx.aasenvironment-core/DefaultAASEnvironment.java	Adjusted method for setting file content to pass a default contentType string.

Comments suppressed due to low confidence (2)

basyx.submodelservice/basyx.submodelservice-client/src/main/java/org/eclipse/digitaltwin/basyx/submodelservice/client/internal/SubmodelServiceApi.java:1199

• Consider adding error handling to manage cases where ContentType.parse(contentType) might throw an exception on invalid MIME type strings.

			ContentType fileContentType = contentType != null ? ContentType.parse(contentType) : ContentType.DEFAULT_BINARY;

basyx.submodelservice/basyx.submodelservice-core/src/test/java/org/eclipse/digitaltwin/basyx/submodelservice/SubmodelServiceSuite.java:432

• Consider adding tests to cover edge cases for the contentType parameter, such as null or invalid MIME type values, to ensure robust handling.

		submodelService.setFileValue(idShortPathPropertyInSmeCol, "jsonFile1.json", "application/json", getInputStreamOfDummyFile(DUMMY_JSON_1));

[FriedJannik]