Ability to fine tune custom model on conversable agents (#1787)

* uAbility to update_model on conversable agents

* formatting

* formatting

* move code from conversable agent into samples/tools and add testing and README

* forgot install step

* fix

* leave core lib unchanged and move everything to samples/tools

* remove skip openai

---------

Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>

.github/workflows/samples-tools-tests.yml

@@ -0,0 +1,46 @@
+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+
+name: SamplesToolsTests
+
+on:
+  pull_request:
+    branches: ["main"]
+    paths:
+      - "autogen/**"
+      - "samples/tools/**"
+      - ".github/workflows/samples-tools-tests.yml"
+      - "setup.py"
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+permissions: {}
+jobs:
+  SamplesToolsFineTuningTests:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        python-version: ["3.9", "3.10", "3.11"]
+    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 packages and dependencies for all tests
+        run: |
+          python -m pip install --upgrade pip wheel
+          pip install -e .
+          pip install pytest
+      - name: Set AUTOGEN_USE_DOCKER based on OS
+        shell: bash
+        run: |
+          if [[ ${{ matrix.os }} != ubuntu-latest ]]; then
+            echo "AUTOGEN_USE_DOCKER=False" >> $GITHUB_ENV
+          fi
+      - name: Test finetuning tools
+        run: |
+          pytest samples/tools/finetuning/tests/