refactor: enhance Optuna backtesting framework, optimize orderbook filtering, and update database management utilities.

scratch/group_optuna.py

@@ -0,0 +1,8 @@
+import re
+
+path = 'templates/backtest.html'
+with open(path, 'r', encoding='utf-8') as f:
+    html = f.read()
+
+# I will just add a small badge <span class="badge bg-danger ms-1">Optuna</span> to the label 
+# of the known optuna parameters. The user said "어차피 빨갛게 표시햇으니", maybe I already did this?