Refactor sql database so it supports sqlite, added new vectordb type and improved a few things. ran pylint

.github/workflows/py_lint.yaml

@@ -0,0 +1,25 @@
+name: Python Linting
+
+on:
+  push:
+    branches: [ main ]  # This will trigger the workflow on pushes to the main branch
+  pull_request:  # This will trigger the workflow on any pull request to any branch
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.9'  # Specify the Python version you want to use
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pylint  # Install pylint
+
+    - name: Run pylint
+      run: |
+        pylint $(git ls-files '*.py')  # Run pylint on all Python files in the repository