Fix propagate styles

[AydinHassan]

@jtreminio this patch is an option also.

[codecov-io]

Codecov Report

Merging #202 into master will increase coverage by 0.09%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #202      +/-   ##
============================================
+ Coverage     93.91%   94.01%   +0.09%     
  Complexity      516      516              
============================================
  Files            29       29              
  Lines          1561     1570       +9     
============================================
+ Hits           1466     1476      +10     
+ Misses           95       94       -1

Impacted Files	Coverage Δ	Complexity Δ
src/Builder/CliMenuBuilder.php	82.94% <100%> (+1.21%)	70 <1> (ø)	⬇️

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[jtreminio]

This fixes issue when style is set in only one spot:

<?php

use PhpSchool\CliMenu\CliMenu;
use PhpSchool\CliMenu\Builder\CliMenuBuilder;

require_once(__DIR__ . '/../vendor/autoload.php');

$menu = (new CliMenuBuilder)
    ->setBackgroundColour('black')
    ->setForegroundColour('green')
    ->setTitle('Color Test #1')
    ->addLineBreak()
    ->addSubMenu('Submenu #1', function (CliMenuBuilder $b) {
        $b->setTitle('Color Test #2')
            ->addLineBreak()
            ->addSubMenu('Submenu #2', function (CliMenuBuilder $b) {
                $b->setTitle('Color Test #3')
                    ->addLineBreak()
                    ->addItem('Foo #6', function (CliMenu $menu) {})
                    ->addItem('Foo #7', function (CliMenu $menu) {})
                    ->addLineBreak();
            })
            ->addItem('Foo #4', function (CliMenu $menu) {})
            ->addItem('Foo #5', function (CliMenu $menu) {})
            ->addLineBreak();
    })
    ->addItem('Foo #2', function (CliMenu $menu) {})
    ->addItem('Foo #3', function (CliMenu $menu) {})
    ->addLineBreak()
    ->build();

$menu->open();

but fails when style is overridden in a nested menu:

<?php

use PhpSchool\CliMenu\CliMenu;
use PhpSchool\CliMenu\Builder\CliMenuBuilder;

require_once(__DIR__ . '/../vendor/autoload.php');

$menu = (new CliMenuBuilder)
    ->setBackgroundColour('black')
    ->setForegroundColour('green')
    ->setTitle('Color Test #1')
    ->addLineBreak()
    ->addSubMenu('Submenu #1', function (CliMenuBuilder $b) {
        $b->setTitle('Color Test #2')
            ->setBackgroundColour('red')
            ->setForegroundColour('blue')
            ->addLineBreak()
            ->addSubMenu('Submenu #2', function (CliMenuBuilder $b) {
                $b->setTitle('Color Test #3')
                    ->addLineBreak()
                    ->addItem('Foo #6', function (CliMenu $menu) {})
                    ->addItem('Foo #7', function (CliMenu $menu) {})
                    ->addLineBreak();
            })
            ->addItem('Foo #4', function (CliMenu $menu) {})
            ->addItem('Foo #5', function (CliMenu $menu) {})
            ->addLineBreak();
    })
    ->addItem('Foo #2', function (CliMenu $menu) {})
    ->addItem('Foo #3', function (CliMenu $menu) {})
    ->addLineBreak()
    ->build();

$menu->open();