SIENTIAPDE-1243: Remove OPC server integration and add code quality tools.

This commit removes the OPC server integration from the Model Manager, including related activities, repositories, metrics, and configuration. It also adds code quality tools such as Ruff (linting/formatting), mypy (type checking), and Bandit (security analysis) along with a validation script and CI/CD integration for automated code validation. The README has been updated to reflect these changes.

.github/workflows/quality-gate.yml

@@ -193,7 +193,31 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -r ${{ steps.prepare-requirements.outputs.PROCESSED_REQUIREMENTS_FILE }}
-          pip install pytest pytest-cov pytest-asyncio
+          pip install -r requirements-dev.txt
+
+      - name: 📝 Code Formatting Check (Ruff)
+        run: |
+          echo "Checking code formatting..."
+          ruff format --check model_manager/ tests/
+        continue-on-error: false
+
+      - name: 🔎 Code Linting (Ruff)
+        run: |
+          echo "Running linting checks..."
+          ruff check model_manager/ tests/
+        continue-on-error: false
+
+      - name: 🏷️ Type Checking (mypy)
+        run: |
+          echo "Running type checks..."
+          mypy model_manager/
+        continue-on-error: true
+
+      - name: 🔒 Security Analysis (Bandit)
+        run: |
+          echo "Running security analysis..."
+          bandit -r model_manager/ -ll -q
+        continue-on-error: true
 
       - name: 🧪 Run Tests with Pytest
         run: |