add public methods for getting min and max on ranges

[ix0rai]

without this, it's impossible for you to check the min and max of a tracked value

context:
this method in my mod

	private static Option<Double> createOptional(TrackedValue<Float> trackedValue) {
		Constraint.Range<?> range = null;

		for (Constraint<?> c : trackedValue.constraints()) {
			if (c instanceof Constraint.Range<?> constraintRange) {
				range = constraintRange;
			}
		}

		if (range == null) {
			throw new RuntimeException("value must have float range constraint " + trackedValue);
		}

		return new Option<>(
				trackedValue.key().toString(),
				Option.constantTooltip(Text.empty()),
				(text, value) -> GameOptions.getGenericValueText(text, Text.translatable("options.multiplier", value)),
				new Option.IntRangeValueSet((int) range.min() * 10, (int) range.max() * 10).withModifier(i -> (double) i / 10.0, double_ -> (int) (double_ * 10.0)),
				Codec.doubleRange(range.min(), range.max()),
				(double) trackedValue.getDefaultValue(),
				value -> {
					trackedValue.setValue(value.floatValue());
				}
		);
	}

requires an access widener to work, and there should be a proper way to do this