|Need| Camera movements

[WithSJ]

CAMERA movements mean we need to add rotations, transformation, or maybe scaling.

if we have this all we can place the camera according to user
below code just for testing camera

#include <iostream>
#include <chrono>

#include "Engine/renderengine.h"

using namespace std::chrono;

int main(int argc, char const *argv[])
{
    /* code */
    // Eclectus Testing 1.0
    auto start = high_resolution_clock::now();

    short int WIDTH = 320;
    short int HEIGHT = 200;
    
    

    Color col = Color::from_hex("#0000ff");
    Material* material1 = new Material(col);
    Sphere obj1(Vector(-0.75, -0.1, 2.25),0.6,material1);

    Color col3 = Color::from_hex("#803880");
    Material* material3 = new Material(col3);
    Sphere obj3(Vector(0.75, -0.1, 1) ,0.6,material3);

    // Ground
    Color wh = Color::from_hex("#ffffff");
    Color bk = Color::from_hex("#000000");
    Material* mat = new CheckerMaterial(wh,bk);

    Color Gcol = Color::from_hex("#00ff00");
    Material material2(Gcol);
    Sphere obj2(Vector(0,10000,100),10000,mat);
    
    
    Sphere Objects[] = {obj1,obj2,obj3};    
    
    Color light_col(255,255,255);
    Light point_light(Vector(1.5, -0.5, -10),light_col);
    
    Color light_col2 = Color::from_hex("#E6E6E6");
    Light point_light2(Vector(-0.5, -10.5, 0),light_col2);

    Light Lights[] = {point_light,point_light2};

    float x=0,y=0,z=-1;
    char key;
    while(1)
    {
        Vector Camera(x, y, z);
    
        Scene scene(Camera,Objects,3,Lights,2,WIDTH,HEIGHT);

        RenderEngine engine;

        Image img =  engine.render(scene);

        img.write_ppm("Eclectus_test.ppm");

        auto stop = high_resolution_clock::now();
        auto duration = duration_cast<microseconds>(stop - start);
        float d = float(duration.count())/1000000.0;
        std::cout<<"\n#Time takes in microseconds: "<< duration.count();
        std::cout<<"\n#Time takes in seconds: "<< d<<std::endl;

        key = getchar();
        if(key == 'w')
            z += 0.5;
        if(key == 's')
            z -= 0.5;
        if(key == 'a')
            x -= 0.5;
        if(key == 'd')
            x += 0.5;
        
    }
    
    
    return 0;
}