create a github action for triggering client-sdk tests on new pull-request (#850)

# What does this PR do?

Create a new github action that runs integration tests on fireworks and
together distro upon new PR

**Key features:**
1) Run inference client-sdk tests on fireworks and together distro. Load
distro as a library
2) Pull changes from latest github repo (llama-models) and
(llama-stack-client-python)
3) output a test summary 

**Next steps:**
- Expand the ci test action to (llama-models) and
(llama-stack-client-python) repo to make sure the changes there does not
break the imports in llama-stack

## Test Plan

See [the job run triggered by this
PR](1292666319)

.github/workflows/tests.yml

@@ -0,0 +1,69 @@
+name: auto-tests
+
+on:
+  # pull_request:
+  workflow_dispatch:
+    inputs:
+      commit_sha:
+        description: 'Specific Commit SHA to trigger on'
+        required: false
+        default: $GITHUB_SHA # default to the last commit of $GITHUB_REF branch
+
+jobs:
+  test-llama-stack-as-library:
+    runs-on: ubuntu-latest
+    env:
+      TOGETHER_API_KEY: ${{ secrets.TOGETHER_API_KEY }}
+      FIREWORKS_API_KEY: ${{ secrets.FIREWORKS_API_KEY }}
+      TAVILY_SEARCH_API_KEY: ${{ secrets.TAVILY_SEARCH_API_KEY }}
+    strategy:
+      matrix:
+        provider: [fireworks, together]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.inputs.commit_sha }}
+
+      - name: Echo commit SHA
+        run: |
+          echo "Triggered on commit SHA: ${{ github.event.inputs.commit_sha }}"
+          git rev-parse HEAD
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt pytest
+          pip install -e .
+
+      - name: Build providers
+        run: |
+          llama stack build --template ${{ matrix.provider }} --image-type venv
+
+      - name: Install the latest llama-stack-client & llama-models packages
+        run: |
+          pip install -e git+https://github.com/meta-llama/llama-stack-client-python.git#egg=llama-stack-client
+          pip install -e git+https://github.com/meta-llama/llama-models.git#egg=llama-models
+
+      - name: Run client-sdk test
+        working-directory: "${{ github.workspace }}"
+        env:
+          REPORT_OUTPUT: md_report.md
+        shell: bash
+        run: |
+          pip install --upgrade pytest-md-report
+          echo "REPORT_FILE=${REPORT_OUTPUT}" >> "$GITHUB_ENV"
+
+          export INFERENCE_MODEL=meta-llama/Llama-3.1-8B-Instruct
+          LLAMA_STACK_CONFIG=./llama_stack/templates/${{ matrix.provider }}/run.yaml pytest --md-report --md-report-verbose=1 ./tests/client-sdk/inference/test_inference.py --md-report-output "$REPORT_OUTPUT"
+
+      - name: Output reports to the job summary
+        if: always()
+        shell: bash
+        run: |
+          if [ -f "$REPORT_FILE" ]; then
+            echo "<details><summary> Test Report for ${{ matrix.provider }} </summary>" >> $GITHUB_STEP_SUMMARY
+            echo "" >> $GITHUB_STEP_SUMMARY
+            cat "$REPORT_FILE" >> $GITHUB_STEP_SUMMARY
+            echo "" >> $GITHUB_STEP_SUMMARY
+            echo "</details>" >> $GITHUB_STEP_SUMMARY
+          fi