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

2022-04-21.23-39-59.mp4

After

2022-04-21.23-41-07.mp4

[ModdGodd]

Seems great! I think more actions like this should be added as they just open up more posibilities.