github: workflows: Add cargo support to twister

Add cargo's bin to the path, and print out the versioning of the tool to
make it easy to ensure the right version has been installed.

Signed-off-by: David Brown <david.brown@linaro.org>

.github/workflows/twister.yaml

@@ -190,6 +190,7 @@ jobs:
             git log  --pretty=oneline | head -n 10
           fi
           echo "$HOME/.local/bin" >> $GITHUB_PATH
+          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
 
           west init -l . || true
           west config manifest.group-filter -- +ci,+optional
@@ -203,6 +204,8 @@ jobs:
         run: |
           cmake --version
           gcc --version
+          cargo --version
+          rustup target list --installed
           ls -la
           echo "github.ref: ${{ github.ref }}"
           echo "github.base_ref: ${{ github.base_ref }}"