fix slot grid when the amount of slots is a prime number

[PrototypeTrousers]

What:
This PR solves the issue of determineSlotsGrid not taking into account that some numbers are not perfect squares or multiples of 2,3 , like prime numbers

How solved:
if the amount of input slots is not a perfect square, we raise the amount of slots to the left, if the total amount slots is still not enough we increase the amount of the bottom ( we grow the grid to the next perfect square root)

Outcome:
Returns a grid with appropriate slots for inputs with size 5,7,11.. etc

Possible compatibility issue:
None

[ALongStringOfNumbers]

Crash when opening the JEI page for the LCR https://pastebin.com/Yu3zatQ4

[PrototypeTrousers]

Looks like i missed what was the return expected.
The function does return a valid 2x2 grid for a 3 slots inputs, but the expected result is actually a 3x1 grid. will refactor with that in mind