Implement basic game logic

[Mystri]

Finish basic game logic.
Here's @rishisek 's comment on the logic, basically what we expect for a turn to do.

    /**
     * A single turn:
     * - Use
     * - Move
     * - Attack
     * - Buy
     *
     * DecisionSet becomes a compilation of these 4. At the end of a turn, decision_set is written to JSON.
     *
     * Turn {
     * players: [
     *  Player {
     *    // state
     *  }
     * ],
     * decision_sets: [
     *  DecisionSet {
     *    use, move, attack, buy
     *  }
     * ]
     * }
     */

    /*
    1. Create GameState
    2. For each turn of game,
        a. execute use, move, ...
        b. render turn
     */

[Mystri]

Start by designing and writing unit tests for each action. We will go through the design part in today's meeting.

Designing:

• SetUp

• AttackAction

• BuyAction Implement BuyAction and UseAction #7

• MoveAction Implement MovementAction #5

• UseAction Implement BuyAction and UseAction #7

Unit Tests Written:

• AttackAction
• BuyAction
• MoveAction
• UseAction

After finishing tests for the actions and finished #2 , write unit tests for final results.

• Main

[Mystri]

This will be closed after the unit testings and implementations are done.