feat: update ci_windows.yml to update PATH to expose CUDA codegen backend.

Author: madhav-madhusoodanan

.github/workflows/ci_windows.yml

@@ -67,6 +67,10 @@ jobs:
       - name: Add rustup components
         run: rustup component add rustfmt clippy
 
+      - name: Update PATH to expose CUDA codegen backend
+        run: |
+          $env:PATH += ";C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v12.8\nvvm\bin"
+
       - name: Verify CUDA, Rust installation
         run: |
           nvcc --version
@@ -84,7 +88,9 @@ jobs:
         run: cargo build --all-features -p cust_raw
 
       - name: Build workspace
-        run: cargo build --workspace --exclude "optix*" --exclude "path-tracer" --exclude "denoiser" --exclude "vecadd*" --exclude "gemm*" --exclude "ex0*" --exclude "cudnn*" --exclude "sha2*"
+        run: |
+          
+          cargo build --workspace --exclude "optix*" --exclude "path-tracer" --exclude "denoiser" --exclude "vecadd*" --exclude "gemm*" --exclude "ex0*" --exclude "cudnn*" --exclude "sha2*"
 
       - name: Clippy
         env: