First version of save function + unit tests

Finished first version of qim3d.io.save() + unit tests. I am not sure what self.verbose is intended to do, so for the moment, I have just left it unused in init()

qim3d/io/save.py

@@ -8,12 +8,6 @@ from qim3d.io.logger import log
 class DataSaver:
     """Utility class for saving data to different file formats.
 
-    Args:
-        replace (bool, optional): Specifies if an existing file with identical path should be replaced. 
-            Default is False.
-        compression (bool, optional): Specifies if the file should be saved with Deflate compression.
-            Default is False.
-
     Attributes:
         replace (bool): Specifies if an existing file with identical path is replaced.
         compression (bool): Specifies if the file is with Deflate compression.
@@ -22,12 +16,6 @@ class DataSaver:
         save_tiff(path,data): Save data to a TIFF file to the given path.
         load(path,data): Save data to the given path. 
 
-    Raises:
-        ValueError: If the file format is not supported.
-        ValueError: If the specified folder does not exist.
-        ValueError: If a file extension is not provided.
-        ValueError: if a file with the specified path already exists and replace=False.
-
     Example:
         image = qim3d.examples.blobs_256x256
         saver = qim3d.io.DataSaver(compression=True)