Optimize git archive (#1175)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **Chores**
- Updated `.gitattributes` to ignore image files (`.png`, `.jpg`,
`.gif`) and Jupyter notebooks (`.ipynb`) during repository exports.
- Added `onediff-src.zip` to `.gitignore` to prevent tracking of
specific archive files.
- Improved GitHub Actions workflow for clearer installation and testing
phases for the `diffusers_examples` test suite.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.gitattributes

@@ -0,0 +1,4 @@
+*.png export-ignore
+*.jpg export-ignore
+*.ipynb export-ignore
+*.gif export-ignore

.github/workflows/examples.yml

@@ -361,9 +361,9 @@ jobs:
       - if: matrix.test-suite == 'diffusers_examples'
         run: docker exec -w /src/onediff/onediff_diffusers_extensions ${{ env.CONTAINER_NAME }} bash examples/unet_save_and_load.sh --model_id=/share_nfs/hf_models/stable-diffusion-xl-base-1.0
       - if: matrix.test-suite == 'diffusers_examples'
-        run: |
-          docker exec ${{ env.CONTAINER_NAME }} python3 -m pip install --user scikit-image "numpy<2" "diffusers==0.23" peft pytest "huggingface_hub<=0.25.0"
-          docker exec -e ONEFLOW_MLIR_ENABLE_INFERENCE_OPTIMIZATION=0 ${{ env.CONTAINER_NAME }} python3 -m pytest -v onediff_diffusers_extensions/tests/test_lora.py --disable-warnings
+        run: docker exec ${{ env.CONTAINER_NAME }} python3 -m pip install --user scikit-image "numpy<2" "diffusers==0.23" peft pytest "huggingface_hub<=0.25.0"
+      - if: matrix.test-suite == 'diffusers_examples'
+        run: docker exec -e ONEFLOW_MLIR_ENABLE_INFERENCE_OPTIMIZATION=0 ${{ env.CONTAINER_NAME }} python3 -m pytest -v onediff_diffusers_extensions/tests/test_lora.py --disable-warnings
 
       - name: Install Requirements for WebUI
         if: matrix.test-suite == 'webui'

.gitignore

@@ -184,3 +184,4 @@ onediff_comfy_nodes/benchmarks/results/
 
 # setuptools_scm
 _version.py
+onediff-src.zip