Add a method to getAllFileMetadata into FileRepository interface

[aaronzi]

The FileRepository lacks a method to get AllFileMetadata, so there is no way to get the information on all the files inside the repository.

User Story:

As a BaSyx user, I want to get all the information of all the files stored in the FileRepository, so that I do not have to know the file ID to retrieve the file.

Rules

• Only Metadata should be supplied
• should use PaginationInfo as well

Entry Points

1. basyx-java-server-sdk/basyx.common/basyx.filerepository-backend/src/main/java/org/eclipse/digitaltwin/basyx/core/filerepository/FileRepository.java at main · eclipse-basyx/basyx-java-server-sdk (github.com)
2. basyx-java-server-sdk/basyx.common/basyx.filerepository-backend-inmemory/src/main/java/org/eclipse/digitaltwin/basyx/core/filerepository/InMemoryFileRepository.java at main · eclipse-basyx/basyx-java-server-sdk (github.com)
3. basyx-java-server-sdk/basyx.common/basyx.filerepository-backend-mongodb/src/main/java/org/eclipse/digitaltwin/basyx/core/filerepository/MongoDBFileRepository.java at main · eclipse-basyx/basyx-java-server-sdk (github.com)

Acceptance Criteria

• getAllMetadata returns existing file Metadata inside the file repo

Dependencies and Blockers

Pagination should also be applied