Layered Surface Segmentation Feature

In this branch, the feature for demostrating Layered Surface Segmentation based on the slgbuilder package, is implemented. The feature is divided into a functional file, visualisation file and a gui file, all named Layers2d.

qim3d/__init__.py

+"""qim3d: A Python package for 3D image processing and visualization.
+
+The qim3d library is designed to make it easier to work with 3D imaging data in Python. 
+It offers a range of features, including data loading and manipulation,
+image processing and filtering, visualization of 3D data, and analysis of imaging results.
+
+Documentation available at https://platform.qim.dk/qim3d/
+
+"""
+
+__version__ = "0.4.1"
+
+
+import importlib as _importlib
+
+
+class _LazyLoader:
+    """Lazy loader to load submodules only when they are accessed"""
+
+    def __init__(self, module_name):
+        self.module_name = module_name
+        self.module = None
+
+    def _load(self):
+        if self.module is None:
+            self.module = _importlib.import_module(self.module_name)
+        return self.module
+
+    def __getattr__(self, item):
+        module = self._load()
+        return getattr(module, item)
+
+
+# List of submodules
+_submodules = [
+    "examples",
+    "generate",
+    "gui",
+    "io",
+    "models",
+    "processing",
+    "tests",
+    "utils",
+    "viz",
+    "cli",
+]
+
+# Creating lazy loaders for each submodule
+for submodule in _submodules:
+    globals()[submodule] = _LazyLoader(f"qim3d.{submodule}")