feat: Add SQL script export option

- Added functionality to export the full database schema (CREATE statements) and data (INSERT statements) as a single `.sql` file.
- Created a new route `/export/database.sql` in `routes/export.py`.
- Added helper functions to `routes/export.py` (adapted from `sql_explorer`) to generate schema CREATE statements and data INSERT statements.
- Added a download link for the SQL export to the Settings page (`templates/settings.html`).
- Updated the changelog entry for data export to include the SQL option.

templates/settings.html

@@ -182,6 +182,39 @@
 
     </div>
 
+    <!-- Data Export Section -->
+    <div class="bg-white shadow rounded-lg p-4 sm:p-6 xl:p-8 mb-8">
+        <div class="mb-4 flex items-center justify-between">
+            <div>
+                <h3 class="text-xl font-bold text-gray-900 mb-2">Data Export</h3>
+            </div>
+        </div>
+        <div class="flex flex-col space-y-4"> <!-- Added space-y-4 for spacing between buttons -->
+            <p class="text-sm text-gray-600">Download all workout set data as a CSV file, or the entire database
+                structure and data as an SQL script.</p>
+            <a href="{{ url_for('export.export_workouts_csv') }}" class="text-white bg-green-600 hover:bg-green-700 focus:ring-4 focus:ring-green-300 font-medium
+                rounded-lg text-sm px-5 py-2.5 text-center inline-flex items-center justify-center w-full sm:w-auto">
+                <svg class="w-5 h-5 mr-2 -ml-1" fill="currentColor" viewBox="0 0 20 20"
+                    xmlns="http://www.w3.org/2000/svg">
+                    <path fill-rule="evenodd"
+                        d="M6 2a2 2 0 00-2 2v12a2 2 0 002 2h8a2 2 0 002-2V7.414A2 2 0 0015.414 6L12 2.586A2 2 0 0010.586 2H6zm5 6a1 1 0 10-2 0v3.586l-1.293-1.293a1 1 0 10-1.414 1.414l3 3a1 1 0 001.414 0l3-3a1 1 0 00-1.414-1.414L11 11.586V8z"
+                        clip-rule="evenodd"></path>
+                </svg>
+                Export All Workouts (CSV)
+            </a>
+            <a href="{{ url_for('export.export_database_sql') }}"
+                class="text-white bg-blue-600 hover:bg-blue-700 focus:ring-4 focus:ring-blue-300 font-medium rounded-lg text-sm px-5 py-2.5 text-center inline-flex items-center justify-center w-full sm:w-auto">
+                <svg class="w-5 h-5 mr-2 -ml-1" fill="currentColor" viewBox="0 0 20 20"
+                    xmlns="http://www.w3.org/2000/svg">
+                    <path
+                        d="M2 5a2 2 0 012-2h12a2 2 0 012 2v10a2 2 0 01-2 2H4a2 2 0 01-2-2V5zm3.293 1.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z"
+                        clip-rule="evenodd"></path>
+                </svg> <!-- Using a generic download/database icon -->
+                Export Database (SQL Script)
+            </a>
+        </div>
+    </div>
+
 </div>
 
 {% endblock %}