[Patch Note] Update and bug fixes on October 20th

1. Additions and changes
   • Customizing keys
     - Add Key Customization on the Keyboard
   • Chain Bonus BGM
     - Dedicated BGM plays when Chain Bonus is activated
   • Durahan Weapon Skill "Overcoming Pain"
     - If an enemy's long-range attack is fired from a certain distance, there is no stiffness and damage is increased by 10%.
     - Excluding Bosses
   • Durahan Weapon skill "Rock Off"
     - Do not play BGM dedicated to chain bonus during battle.
   • Black Knight's activation addiction, modified to immunity from bleeding
   • Lenore's rushing attack speeds up
2. Balance adjustment
   • Increase the horsepower of diving when hitting an enemy with a general attack
   • Lower mana consumption of characteristic 'Quantum Gate'
   • Durahan Weapon skill's attack power increase effect is reduced to 10%
   • Increased mana consumption of additional cabal due to the characteristic 'Upgrade Cavalry' and stigma 'Floating Plumage'

["Overcoming Pain","Rock Off"]
The two skill names are subject to change later.

• Fixed an error where Playtime was not displayed properly in Register
• Fixed an error that was not hit by some bosses when using 'Low-flying Rush' on the ground