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-ndarray/Cargo.toml

@@ -0,0 +1,97 @@
+[package]
+authors = ["nathanielsimard <nathaniel.simard.42@gmail.com>"]
+categories = ["science", "no-std", "embedded", "wasm"]
+description = "Ndarray backend for the Burn framework"
+documentation = "https://docs.rs/burn-ndarray"
+edition.workspace = true
+keywords = ["deep-learning", "machine-learning", "data"]
+license.workspace = true
+name = "burn-ndarray"
+readme.workspace = true
+repository = "https://github.com/tracel-ai/burn/tree/main/crates/burn-ndarray"
+version.workspace = true
+
+[lints]
+workspace = true
+
+[features]
+blas-accelerate = [
+    "blas-src/accelerate", # Accelerate framework (macOS only)
+    "ndarray/blas",
+]
+blas-netlib = ["blas-src/netlib", "ndarray/blas"]
+blas-openblas = ["blas-src/openblas", "ndarray/blas", "openblas-src"]
+blas-openblas-system = [
+    "blas-src/openblas",
+    "ndarray/blas",
+    "openblas-src/system",
+]
+default = ["std", "simd", "multi-threads"]
+doc = ["default"]
+multi-threads = [
+    "rayon",
+    "ndarray/rayon",
+    "matrixmultiply/threading",
+]
+simd = ["macerator", "bytemuck", "seq-macro", "itertools"]
+std = [
+    "burn-autodiff",
+    "burn-std/std",
+    "burn-backend/std",
+    "burn-ir/std",
+    "ndarray/std",
+    "matrixmultiply/std",
+    "rand/std",
+    "rand/std_rng",
+    "num-traits/std",
+    "macerator/std",
+]
+tracing = [
+    "burn-autodiff?/tracing",
+    "burn-std/tracing",
+    "burn-backend/tracing",
+    "burn-ir/tracing",
+]
+
+# Serves as a ref impl for some burn-cubecl kernels
+export_tests = []
+
+[dependencies]
+
+# ** Please make sure all dependencies support no_std when std is disabled **
+
+burn-autodiff = { path = "../burn-autodiff", version = "=0.21.0-pre.2", default-features = false, optional = true }
+burn-std = { path = "../burn-std", version = "=0.21.0-pre.2", default-features = false }
+burn-ir = { path = "../burn-ir", version = "=0.21.0-pre.2", default-features = false }
+burn-backend = { path = "../burn-backend", version = "=0.21.0-pre.2", default-features = false }
+
+atomic_float = { workspace = true }
+blas-src = { workspace = true, default-features = false, optional = true }      # no-std compatible
+const-random = { workspace = true }
+libm = { workspace = true }
+matrixmultiply = { workspace = true, default-features = false }
+ndarray = { workspace = true }
+num-traits = { workspace = true }
+openblas-src = { workspace = true, optional = true }
+paste = { workspace = true }
+rand = { workspace = true, default-features = false }
+
+# SIMD
+bytemuck = { workspace = true, optional = true }
+itertools = { version = "0.14", optional = true }
+macerator = { workspace = true, optional = true }
+seq-macro = { version = "0.3", optional = true }
+
+# Parallel
+rayon = { workspace = true, optional = true }
+
+[target.'cfg(not(target_has_atomic = "ptr"))'.dependencies]
+portable-atomic = { workspace = true }
+portable-atomic-util = { workspace = true }
+
+[dev-dependencies]
+bytes = { workspace = true }
+
+[package.metadata.docs.rs]
+features = ["doc"]
+rustdoc-args = ["--cfg", "docsrs"]