* Add SQL query executor

* Move mermaid.min.js to static asset
* Create templates for sql logic

app.py

@@ -469,21 +469,26 @@ def delete_exercise(exercise_id):
     db.exercises.delete_exercise(exercise_id)
     return ""
 
+@app.route("/sql_explorer", methods=['GET'])
+def sql_explorer():
+    if htmx:
+        return render_block(app.jinja_env, 'sql_explorer.html', 'content')
+    return render_template('sql_explorer.html')
+
+@app.route("/sql_query", methods=['POST'])
+def sql_query():
+    query = request.form.get('query')
+    (results, columns, error) = db.sql_explorer.execute_sql(query)
+    
+    return render_template('partials/sql_explorer/sql_query.html', query=query, results=results, columns=columns, error=error)
+
+
+
 @ app.route("/sql_schema", methods=['GET'])
-def get_sql_schema():
-    schema_info = db.sql_viewer.get_schema_info()
-    mermaid_code = db.sql_viewer.generate_mermaid_er(schema_info)
-    html_content = f'''
-    <div class="overflow-auto" style="max-height: 80vh;">
-        <div class="mermaid" style="opacity: 0;"
-             _="on load
-                 mermaid.init(undefined, this)
-                 set me.style.opacity to '1'">
-{mermaid_code}
-        </div>
-    </div>
-    '''
-    return html_content
+def sql_schema():
+    schema_info = db.sql_explorer.get_schema_info()
+    mermaid_code = db.sql_explorer.generate_mermaid_er(schema_info)
+    return render_template('partials/sql_explorer/schema.html', mermaid_code=mermaid_code)
 
 @app.teardown_appcontext
 def closeConnection(exception):