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-backend-tests/tests/cubecl/bernoulli.rs

@@ -0,0 +1,48 @@
+use super::*;
+
+use serial_test::serial;
+
+use core::f32;
+
+use burn_tensor::{Distribution, Shape, Tensor, backend::Backend};
+
+use cubek::random::{assert_number_of_1_proportional_to_prob, assert_wald_wolfowitz_runs_test};
+
+#[test]
+#[serial]
+fn number_of_1_proportional_to_prob() {
+    let device = Default::default();
+    TestBackend::seed(&device, 0);
+
+    let shape: Shape = [40, 40].into();
+    let prob = 0.7;
+
+    let tensor =
+        Tensor::<TestBackend, 2>::random(shape.clone(), Distribution::Bernoulli(prob), &device)
+            .into_data();
+
+    let numbers = tensor
+        .as_slice::<<TestBackend as Backend>::FloatElem>()
+        .unwrap();
+
+    assert_number_of_1_proportional_to_prob(numbers, prob as f32);
+}
+
+#[test]
+#[serial]
+fn wald_wolfowitz_runs_test() {
+    let device = Default::default();
+    TestBackend::seed(&device, 0);
+
+    let shape = Shape::new([512, 512]);
+    let device = Default::default();
+    let tensor = Tensor::<TestBackend, 2>::random(shape, Distribution::Bernoulli(0.5), &device);
+
+    let data = tensor.into_data();
+    let numbers = data
+        .as_slice::<<TestBackend as Backend>::FloatElem>()
+        .unwrap();
+
+    // High bound slightly over 1 so 1.0 is included in second bin
+    assert_wald_wolfowitz_runs_test(numbers, 0., 1.1);
+}