- Removed PowerMock dependencies from pom.xml as it's incompatible with modern Mockito (v5+)
- Updated pom.xml to use JUnit 5 (`junit-jupiter`) and `mockito-junit-jupiter` for clean integration
- Replaced incorrect stubbing of long-returning methods (`getDepth()`, `getFrames()`, `getChannels()`)
  in test class with proper `long` literals (e.g., `5L` instead of `5`)
- Ensured all Mockito stubs match the exact return types to avoid `WrongTypeOfReturnValue` errors
- Confirmed tests now run under JUnit 5 with `MockitoExtension` and no legacy dependencies

feat(gui): Add two bound StringProperties to pass input name from Preprocessing to Projection controller

           - Introduced two StringProperty fields in the GUI, bound to each other
           - Used to transfer the input name from the PreprocessingController to the ProjectionController
           - Input name is now displayed in the Projection view

- Integrated FileChooser in save mode to let users pick where to save the example.csv
- Extracts the embedded CSV from resources and writes it to the selected location
- Automatically opens the file in the default system editor after saving

- Deleted Tests from `PretreatmentParametersTest`, which contained tests for deprecated and unused functionality.

refactor: updated property types from DoubleProperty to IntegerProperty to better reflect value semantics

feat: Added error popup on Run button click when no image is loaded to prevent program execution without required input

Serialization and Deserialization of parameters using a JSON file