Implement sessions and games so we can have multiplayer

[RolandoDrRobot]

Closes #20

The idea is to implement the necessary models to have sessions and games where other can join to your game, this was developed in the game jam and was tested there, still need to implement in unity

Included:

• Tests for the missing models
• The logic for Game and GamePlayer to support multiplayer functionality, including models with their respective tests and traits, and tests for those traits.
• The technical debt includes writing the test for the realms.cairo file, even though all the methods it uses are the traits of those new models. Everything should work, but it's more about covering edge cases and simulating the multiplayer session issue. realms.cairo testing cases #30

Testing and Build

[coxmars]

@RolandoDrRobot lgtm, sozo build and sozo test passed. I will review it in more detail tomorrow if you want 🫡

[danielcdz]

In the PR we can use Closes #issue see this comment: #15 (comment)

[danielcdz]

I will review the code in detail tomorrow sir @RolandoDrRobot 🫡

[coxmars]

Hi @RolandoDrRobot, LGTM just resolve the conflits and we are done 🫡

[RolandoDrRobot]

@coxmars Done 👍

[coxmars]

Conflicts have been resolved, but I'd like to know the responses to Daniel's feedback 🫡

[coxmars]

LGTM 🫡

[danielcdz]

LGTM