Fix number/integer stuff

[TPGamesNL]

Description

Improve integer support by making expressions that will always return an integer, reflect that in their return type.
Test code:

function test(i: integer):
	broadcast "i %{_i}%"

command /test:
	trigger:
		test(size of all players)
		loop 2 times:
			test(loop-integer)
			test(loop-number)
			test(loop-value)

---

Target Minecraft Versions: any
Requirements: none
Related Issues: #1602, #2326

[APickledWalrus]

Looks good to me! The idea here of using longs is to prevent overflow, right?

[TPGamesNL]

Looks good to me! The idea here of using longs is to prevent overflow, right?

I use longs because those are what Skript uses for integers:

Skript/src/main/java/ch/njol/skript/classes/data/JavaClasses.java

Lines 136 to 137 in 2497729

	Classes.registerClass(new ClassInfo<>(Long.class, "long")
	.user("int(eger)?s?")