Save files function

Ticket: https://www.notion.so/qim-dtu/Save-functions-for-H5-Nifti-and-TXM-VOL-a45239dbda58492bbccd719b9d9398d4?pvs=4

Limitations: Does not save meta data

qim3d/io/load.py

@@ -378,10 +378,14 @@ class DataLoader:
         match dt:
             case 'float':
                 dt = np.float32
+            case 'float32':
+                dt = np.float32
             case 'uint8':
                 dt = np.uint8
             case 'unsigned integer':
                 dt = np.uint16
+            case 'uint16':
+                dt = np.uint16
             case _:
                 raise ValueError(f"Unsupported data type: {dt}")