ADD: server-client connection. (NB server code currently must be hosted in a different project in order to be able to run two unity projects on same machine — later we can have some code to determine if any random player wants to act as the server).
ADD: basic chat between server and client.
Merge branch 'Development' of https://github.com/marouen-lamiri/Second-Soul into Development

Conflicts:
	Second Soul/Assets/Editor/PlayerCombatTest.cs
Merge branch 'Development' of https://github.com/marouen-lamiri/Second-Soul into Development