Change calculation method for arrays

[Pyseph]

Currently, if a table is determined to be a continuous array with no holes between its elements, only its values are calculated into account for. Otherwise, it will count the table as a dictionary - this is not the true behavior, as remotes have undocumented behavior when it comes to arrays with holes. Internally, it seems to rely on HttpService:JSONEncode & HttpService:JSONDecode's behavior with arrays, iterating through the array until a gap is met.
As such, to check if a given table is an array, you could do the following:

local IsArray = t[1] ~= nil

If IsArray == true, the dictionary elements would be discarded in favor of the array components only; mixed tables not being supported.

Additionally, the length byte of the table is encoded as a variable and not a constant. It uses the VLQ format, which means the byte size changes at the rate of math.ceil(num_elements(t) / 128), due to the VLQ format using base-128.