[feat] implement command check lang folder, and show missing files an…

[alissn]

Hi,
This PR introduces a new module:lang command that displays missing files/keys of each language.

Like other comments if don't pass module name Arguments check all modules of project.

For Example : this my base module language

➜  lang git:(master) ✗ tree
.
├── ar
│   ├── action.php
│   └── test4.php
├── en
│   ├── action.php
│   ├── constant.php
│   ├── footer.php
│   ├── form.php
│   ├── general.php
│   ├── header.php
│   ├── sidebar.php
│   ├── social.php
│   ├── table.php
│   └── test3.php
└── fa
    ├── action.php
    ├── constant.php
    ├── footer.php
    ├── form.php
    ├── general.php
    ├── header.php
    ├── sidebar.php
    ├── social.php
    ├── table.php
    ├── test1.php
    └── test2.php

3 directories, 23 files

after run command get this result :

also this command showing missing keys of each files 😎
In the example above:
content of file ar/action.php is:

<?php
return [

    ];

and content of file en/action.php is:

<?php

return [
    'action' => 'Action',

    'save'         => 'Save',
    'update'       => 'Update',
    'add'          => 'Add',
    'delete'       => 'Delete',
    'cancel'       => 'Cancel',
    'wait'         => 'Please wait...',
    'apply'        => 'Apply',
    'edit'         => 'Edit',
    'change'       => 'Change',
    'view'         => 'View',
    'show_on_site' => 'Show on site',
    'browse_file'  => 'Browse File',
    'browse_image' => 'Browse Image',
    'browse_video' => 'Browse Video',
    'choose'       => 'Choose',

    'activity_log' => 'Activity Log',
];

and content of file fa/action.php is:

<?php

return [
    'action' => 'عملیات',

    'save'         => 'ذخیره',
    'update'       => 'به‌روزرسانی',
    'add'          => 'افزودن',
    'delete'       => 'حذف',
    'cancel'       => 'لغو',
    'back'         => 'بازگشت',
    'close'        => 'بستن',
    'wait'         => 'لطفا منتظر بمانید...',
    'apply'        => 'اعمال',
    'edit'         => 'ویرایش',
    'change'       => 'تغییر',
    'view'         => 'مشاهده',
    'show_on_site' => 'نمایش در سایت',

    'activity_log' => 'تاریخچه فعالیت',
];

after run command get this result :

[alissn]

hi @dcblogdev

please check this PR.

[alissn]

.

[dcblogdev]

thanks!