Feature: Json Output

[stefanzweifel]

This PR adds a new output format for the project statistics.
Still a work in progress

TODOs:

• Refactor JsonOutput.php
• Write Tests for JsonOutput.php

[stefanzweifel]

Output from a demo project:

 {
    "components": [
        {
            "component": "Commands",
            "number_of_classes": 1,
            "methods": 2,
            "methods_per_class": 2,
            "lines": 42,
            "loc": 5,
            "loc_per_method": 2.5
        },
        {
            "component": "Controllers",
            "number_of_classes": 5,
            "methods": 10,
            "methods_per_class": 2,
            "lines": 209,
            "loc": 29,
            "loc_per_method": 2.9
        },
        {
            "component": "Event Listeners",
            "number_of_classes": 2,
            "methods": 4,
            "methods_per_class": 2,
            "lines": 61,
            "loc": 7,
            "loc_per_method": 1.75
        },
        {
            "component": "Events",
            "number_of_classes": 2,
            "methods": 4,
            "methods_per_class": 2,
            "lines": 72,
            "loc": 20,
            "loc_per_method": 5
        },
        {
            "component": "Jobs",
            "number_of_classes": 17,
            "methods": 34,
            "methods_per_class": 2,
            "lines": 578,
            "loc": 119,
            "loc_per_method": 3.5
        },
        {
            "component": "Mails",
            "number_of_classes": 38,
            "methods": 76,
            "methods_per_class": 2,
            "lines": 1254,
            "loc": 266,
            "loc_per_method": 3.5
        },
        {
            "component": "Middlewares",
            "number_of_classes": 6,
            "methods": 2,
            "methods_per_class": 0.33,
            "lines": 127,
            "loc": 22,
            "loc_per_method": 11
        },
        {
            "component": "Migrations",
            "number_of_classes": 2,
            "methods": 4,
            "methods_per_class": 2,
            "lines": 67,
            "loc": 19,
            "loc_per_method": 4.75
        },
        {
            "component": "Models",
            "number_of_classes": 52,
            "methods": 0,
            "methods_per_class": 0,
            "lines": 539,
            "loc": 108,
            "loc_per_method": 0
        },
        {
            "component": "Notifications",
            "number_of_classes": 45,
            "methods": 180,
            "methods_per_class": 4,
            "lines": 2745,
            "loc": 405,
            "loc_per_method": 2.25
        },
        {
            "component": "Repository",
            "number_of_classes": 1,
            "methods": 1,
            "methods_per_class": 1,
            "lines": 11,
            "loc": 1,
            "loc_per_method": 1
        },
        {
            "component": "Resources",
            "number_of_classes": 1,
            "methods": 1,
            "methods_per_class": 1,
            "lines": 19,
            "loc": 3,
            "loc_per_method": 3
        },
        {
            "component": "Rules",
            "number_of_classes": 43,
            "methods": 129,
            "methods_per_class": 3,
            "lines": 1720,
            "loc": 129,
            "loc_per_method": 1
        },
        {
            "component": "Seeders",
            "number_of_classes": 1,
            "methods": 1,
            "methods_per_class": 1,
            "lines": 16,
            "loc": 1,
            "loc_per_method": 1
        },
        {
            "component": "Service Providers",
            "number_of_classes": 5,
            "methods": 9,
            "methods_per_class": 1.8,
            "lines": 189,
            "loc": 27,
            "loc_per_method": 3
        },
        {
            "component": "DuskTests",
            "number_of_classes": 3,
            "methods": 4,
            "methods_per_class": 1.33,
            "lines": 89,
            "loc": 21,
            "loc_per_method": 5.25
        },
        {
            "component": "PHPUnit Tests",
            "number_of_classes": 5,
            "methods": 4,
            "methods_per_class": 0.8,
            "lines": 88,
            "loc": 20,
            "loc_per_method": 5
        }
    ],
    "total": {
        "number_of_classes": 239,
        "methods": 479,
        "methods_per_class": 1.65,
        "lines": 8138,
        "loc": 1247,
        "loc_per_method": 3.31
    },
    "meta": {
        "code_loc": 1161,
        "test_loc": 41,
        "code_to_test_ratio": "1:0"
    }
}