Add GitHub Actions workflows for automated testing

Author: JakeTrock

.github/README.md

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+# GitHub Actions Workflows
+
+This directory contains GitHub Actions workflows that automatically run tests for the osmosis-wrap package.
+
+## Workflows
+
+### test.yml
+
+This workflow runs on:
+- Every push to the main branch
+- Every pull request to the main branch
+
+It performs the following steps:
+1. Sets up Python environments (3.8, 3.9, 3.10)
+2. Installs the required dependencies
+3. Runs the pytest tests in test.py
+
+The workflow validates that the osmosis-wrap functionality works correctly with various LLM API clients including:
+- Anthropic
+- OpenAI
+- LangChain
+
+## Test Skip Behavior
+
+Some tests are conditionally skipped if the corresponding packages are not installed. This allows the test suite to run even if optional dependencies are not present. 

.github/workflows/test.yml

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+name: Run Tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.8', '3.9', '3.10']
+
+    steps:
+    - uses: actions/checkout@v3
+    
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+        
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest
+        pip install -e .
+        # Install optional dependencies for full test coverage
+        pip install anthropic openai langchain langchain-core
+        
+    - name: Run tests
+      run: |
+        pytest test.py -v