[Feature] Allow "angle" for EnvShake sctrl.

[Hexioum]

As it is now, every screenshake is only vertical, but there is other fighting games (BBCF, P4AU) that allow the screenshakes to have different angles.

Describe the solution you'd like
Add a parameter for the EnvShake sctrl that is "angle".
angle = 0 is the default parameter, means the shake is vertical.
angle = 45 diagonal-up envshake. Diag-up and then diag-down in the opposite direction.
angle = 90 horizontal screenshake. Always to the right side of the screen.
angle = 180 would be the same as angle = 0 if you chose a negative ampl.

Another example,

type = envShake
trigger1 = moveHit = 1
time = 12
ampl = 6
angle = 90*facing
ignoreHitPause = 1
persistent = 0

Means that the screen will always move first in the direction of the player that made the attack.

Additional context
This is another game that has this feature. It really gives a lot more impact to the interactions.
https://www.youtube.com/watch?v=tspf-Z6tbGY&t=22

[potsmugen]

This would be cool. The same enhancement could be copy pasted in the Hitdef Envshake. They should probably go counter-clockwise like everything else (I think) though.