chore: support alembic (#1867)

Co-authored-by: Shubham Naik <shub@memgpt.ai>
Co-authored-by: Sarah Wooders <sarahwooders@gmail.com>

.github/workflows/migration-test.yml

@@ -0,0 +1,34 @@
+name: Alembic Migration Tester
+on:
+  pull_request:
+    paths:
+      - '**.py'
+  workflow_dispatch:
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build and run container
+        run: bash db/run_postgres.sh
+
+      - name: "Setup Python, Poetry and Dependencies"
+        uses: packetcoders/action-setup-cache-python-poetry@main
+        with:
+          python-version: "3.12"
+          poetry-version: "1.8.2"
+          install-args: "--all-extras"
+      - name: Test alembic migration
+        env:
+          LETTA_PG_PORT: 8888
+          LETTA_PG_USER: letta
+          LETTA_PG_PASSWORD: letta
+          LETTA_PG_DB: letta
+          LETTA_PG_HOST: localhost
+          LETTA_SERVER_PASS: test_server_token
+        run: |
+          poetry run alembic upgrade head
+          poetry run alembic check