Add base_stake_amount_ratio config param to support unlimited stakes.

freqtrade/wallets.py

@@ -184,6 +184,17 @@ class Wallets:
             return 0
 
         possible_stake = (available_amount + val_tied_up) / self._config['max_open_trades']
+
+        # Position Adjustment dynamic base order size
+        try:
+            if self._config.get('position_adjustment_enable', False):
+                base_stake_amount_ratio = self._config.get('base_stake_amount_ratio', 1.0)
+                if base_stake_amount_ratio > 0.0:
+                    possible_stake = possible_stake * base_stake_amount_ratio
+        except Exception as e:
+            logger.warning("Invalid base_stake_amount_ratio", e)
+            return 0
+
         # Theoretical amount can be above available amount - therefore limit to available amount!
         return min(possible_stake, available_amount)