大跳 Big Jump

• Update to 1.21.3

• 改為使用屬性修飾符來增加"跳躍力"，而不是修改基礎值，並且讓效果增加量從+0.21變成×1.5。 Use attribute modifiers to increase "Jump Strength" instead of modifying base, and change the effect increase from +0.21 to ×1.5.
• 只有在地面上潛行才能夠增加接下來的跳躍高度。 Only by sneaking on the ground can you increase the height of the next jump.

Change the effective big jump time for getting up after crouching to 0.25 seconds, and prevent players from continuously setting Jump Strength to 0.42 when in normal state.

Changed the effective jump time after crouching up from 0.4 seconds to 0.1 seconds. Avoid sprinting to jump high and long in a valid time.