Added support for network public/private rooms

[tudormarin76]

Features:
Marin Tudor-Nicolae:

• Rooms listing - List all of the public rooms in a scroll view
• Players listing - List all room’s players in a scroll view
• Room profiles - SO that store room settings
• Private room id input - input used for joining private room by a secret id
• Ready button - Each player will need to tap ready button before the game can start
• Reactive variables - Core system that handle changes to all kind of data types. Each variable is a SO and whenever a change is made to the variable an event will be raised so that all the listeners will be updated
  • float variable
  • string variable

Marin Vlad-Constantin:

• Events system - Core system to eliminate dependencies between objects. Each event is stored in a scriptable object
• Private/Public room creation - Create public or private room based on some properties that can be changed from a SO of type RoomProfile
• UI system - Core system to obtain a reactive UI that handles multiple states. Only one state will be displayed at a time
  • UI states - Scriptable object which handle one UI state. This SO have a reference to UI system and whenever we want to activate one state we use UIState.Activate() which will disable all of the active states and display this state
  • UI behaviour - MonoBehaviour attached to all UI objects that we want to listen for the state changes. Each of the instances will have a list of active states in which it can be displayed
• Private/Public room join - Join public or private room if the max players limit was not reached