Add 2 new actions about item && Fix bullet start position rotation issue

[PineappleBrain]

2 New actions

setItemBulletForce set (number) as bullet force of (item) setItemBulletStartPosition set {x: (number2), y: (number3)} with rotation of (number1) in degrees as bullet start position of (item) Here are some demos https://discord.com/channels/303543835345158145/812208366222311434/966641214512312320 Video demo of setItemBulletForce https://discord.com/channels/303543835345158145/812208366222311434/966646555320922173 Video demo of setItemBulletStartPosition

Bullet start position rotation

I have found out the bulletStartPosition rotation setting is not working so I commit one line in item.js to add it back

Before

https://user-images.githubusercontent.com/62375288/164500094-ccdcf31f-fd08-496f-b575-fd0852d1f826.mp4

After

https://user-images.githubusercontent.com/62375288/164500110-97beee7b-23cf-41fb-aa09-d6459bbda342.mp4