Add http.GetStatusDescription

[vicentefelipechile]

This function returns the name of the request (e.g., 200 -> "OK") and the description of the request (e.g., 200 -> "The resource has been obtained"). If the request with that value is not found or does not exist, it will return nil.

For example:

local msg, desc = http.GetStatusDescription(200)
print( msg, desc )
print( http.GetStatusDescription(499) )

Output:

OK      The resource has been obtained
nil

[WilliamVenner]

Maybe http.GetStatusDescription would be a better name? http.HandleCode implies that some processing takes place when called.

[vicentefelipechile]

Done!