WIP: File Storage Refactoring

CHANGELOG.md

...ackend/implementation/MySQL/MySQLGetFilesInDirectory.java

...ackend/implementation/MySQL/MySQLInsertFSODescriptor.java

...database/backend/implementation/MySQL/MySQLListFiles.java

src/main/java/org/caosdb/server/entity/Entity.java

src/main/java/org/caosdb/server/entity/Role.java

...main/java/org/caosdb/server/filesystem/FSODescriptor.java

...org/caosdb/server/filesystem/FileStorageCapabilities.java

...va/org/caosdb/server/filesystem/FileStorageInterface.java

src/main/java/org/caosdb/server/filesystem/FileSystem.java

...n/java/org/caosdb/server/filesystem/LocalFileStorage.java

...aosdb/server/filesystem/consistency/ConsistencyCheck.java

src/main/java/org/caosdb/server/jobs/core/MatchFileProp.java

...n/java/org/caosdb/server/resource/FileSystemResource.java

...n/java/org/caosdb/server/transaction/ChecksumUpdater.java

...caosdb/server/transaction/RetrieveSparseEntityByPath.java

src/main/java/org/caosdb/server/utils/ServerMessages.java