Lerps

Has some lerp functions that look like this:

``ts
/**
* Given a startValue and endValue, returns a function that,
* when passed an alpha value, returns an interpolated value between the two.
*/
type LerpFunction = (startValue: T, endValue: T) => (alpha: number) => T;
`

These are the types:

`
string
number
boolean
Region3
CFrame
UDim2
UDim
Ray
Rect
Color3
Vector2
Vector3
NumberRange
ColorSequence
NumberSequence
PhysicalProperties
NumberSequenceKeypoint
``

The string lerp function is only for Lighting's TimeOfDay property, although probably shouldn't be.