examples/network_buffer.doc.lua, lua/gm-networking/network_buffer.lua:

- Moved buffer related code and text to seperate file.
- Added IsNetworkBuffer function/doc.
- 'NetworkBuffer's are more efficient in data handling and cache their
:Serialize and :Deserialize results.

lua/gm-networking/network_namespace.lua,
lua/gm-networking/network_const.lua:
- Added support for tables, should be able to do nested tables perfectly
fine.

lua/gm-networking/network_variables.lua:
- Switched data dumping to use 'NetMessage's, not tested.