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/changelog/changelog.html

@@ -10,6 +10,18 @@
         <div class="prose max-w-none">
             <p>Updates and changes to the site will be documented here, with the most recent changes listed first.</p>
 
+            <!-- New Entry for Data Export -->
+            <hr class="my-6">
+            <h2 class="text-xl font-semibold mb-2">April 12, 2025</h2>
+            <ul class="list-disc pl-5 space-y-1">
+                <li>Added functionality to export data from the Settings page:</li>
+                <ul class="list-disc pl-5 space-y-1">
+                    <li>Export all workout set data as a CSV file.</li>
+                    <li>Export full database schema (CREATE statements) and data (INSERT statements) as an SQL script.
+                    </li>
+                </ul>
+            </ul>
+
             <!-- New Entry for SQL Generation -->
             <hr class="my-6">
             <h2 class="text-xl font-semibold mb-2">April 5, 2025</h2>