feat: add patch extractor factory demo

src/careamics/dataset_ng/patch_extractor_factory_demo.ipynb

@@ -0,0 +1,90 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import numpy as np\n",
+    "\n",
+    "from careamics.config import create_n2n_configuration\n",
+    "from careamics.dataset_ng.patch_extractor.patch_extractor_factory import (\n",
+    "    create_patch_extractors,\n",
+    ")\n",
+    "\n",
+    "rng = np.random.default_rng()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# define example data\n",
+    "array1 = np.arange(36).reshape(1, 6, 6)\n",
+    "array2 = np.arange(50).reshape(2, 5, 5)\n",
+    "target1 = rng.integers(0, 1, size=array1.shape, endpoint=True)\n",
+    "target2 = rng.integers(0, 1, size=array2.shape, endpoint=True)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "config = create_n2n_configuration(\n",
+    "    \"test_exp\",\n",
+    "    data_type=\"array\",\n",
+    "    axes=\"SYX\",\n",
+    "    patch_size=(8, 8),\n",
+    "    batch_size=1,\n",
+    "    num_epochs=1,\n",
+    ")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "train_inputs, train_targets, _, _ = create_patch_extractors(\n",
+    "    config.data_config, [array1, array2], [target1, target2]\n",
+    ")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "train_inputs.extract_patch(data_idx=0, sample_idx=0, coords=(2, 2), patch_size=(3,3))"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.10.16"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}