feat: update workspace paths and enhance gitignore

- Updated stablediffusion crate path from "../stable-diffusion-burn" to "./crates/stable-diffusion-burn" for proper workspace resolution
- Enhanced .gitignore to include generated model files (.mpk, .pt, .bin, .safetensors, .ckpt) and user_data directory
- Added Cargo.lock to gitignore with appropriate comment
- Reorganized IDE files section in gitignore for better clarity
- Added newline at end of file for proper formatting

crates/stable-diffusion-burn/burn-crates/burn-dataset/examples/hf_dataset.rs

@@ -0,0 +1,22 @@
+use burn_dataset::HuggingfaceDatasetLoader;
+use burn_dataset::SqliteDataset;
+use serde::Deserialize;
+
+#[derive(Deserialize, Debug, Clone)]
+struct MnistItemRaw {
+    pub _image_bytes: Vec<u8>,
+    pub _label: usize,
+}
+fn main() {
+    // There are some datasets, such as https://huggingface.co/datasets/ylecun/mnist/tree/main that contains a script,
+    // In this cases you must enable trusting remote code execution if you want to use it.
+    let _train_ds: SqliteDataset<MnistItemRaw> = HuggingfaceDatasetLoader::new("mnist")
+        .with_trust_remote_code(true)
+        .dataset("train")
+        .unwrap();
+
+    // However not all dataset requires it https://huggingface.co/datasets/Anthropic/hh-rlhf/tree/main
+    let _train_ds: SqliteDataset<MnistItemRaw> = HuggingfaceDatasetLoader::new("Anthropic/hh-rlhf")
+        .dataset("train")
+        .unwrap();
+}