This command adds a long integer to the
specified packet. Typically long integers are 4 bytes in size ranging
from -2,147,483,648
to +2,147,483,647.
The data will be added starting at the cursor position and the cursor will be moved forward by the size of the data added.
long long int Packet: This is the packet that the command should use.
long integer: This is the data to be added.
0 if no error occurred.
-1 if an error occurred.
C++