All in one

<?php

use crewstyle\TeaThemeOptions\TeaThemeOptions;

/**
 * your_theme_description
 *
 * @package your_package
 * @subpackage your_subpackage
 * @since your_package_version
 */

if (!defined('ABSPATH')) {
    die('You are not authorized to directly access to this page');
}

//Include composer autoload
require_once __DIR__.'/vendor/autoload.php';

//Instanciate a new TeaThemeOptions
$tea = new TeaThemeOptions();


//Define an example page and build menu
$tea->addMenu(array(
    'title' => __('Example page'),
    'name' => __('Example page'),
    'slug' => 'examplepage'
));

//Build contents
add_filter('tto_template_examplepage_contents', 'tto_examplepage');
function tto_examplepage($contents)
{
	return array(
    array(
      'type' => 'heading',
      'title' => __('Header.')
    ),
    array(
      'type' => 'radio',
      'title' => __('Fix the main menu bar to the top of the screen?'),
      'id' => 'header_menu_position',
      'default' => 'yes',
      'options' => array(
        'yes' => __('Yes'),
        'no' => __('No')
      )
    ),
    array(
      'type' => 'heading',
      'title' => __('Footer.')
    ),
    array(
      'type' => 'text',
      'title' => __('Copyright.'),
      'id' => 'footer_copyright',
      'default' => __('&copy; your_name, all rights reserved ~ Built with ♥ with the Tea Theme Options!')
    ),
  );
}

//Build menus
$tea->buildMenus();


//Build post type
$tea_configs = array(
  'slug' => 'project',

  'labels' => array(
    'name' => __('Projects'),
    'singular_name' => __('Project'),
  ),

  'capability_type' => 'post',
  'has_archive' => true,
  'hierarchical' => false,
  'menu_icon' => 'dashicons-portfolio',
  'menu_position' => 5,
  'public' => true,
  'query_var' => true,
  'show_ui' => true,

  'supports' => array('title', 'editor', 'excerpt', 'thumbnail', 'revision', 'comments'),
  'taxonomies' => array(),
);
//Build contents
$tea_contents = array(
  array(
    'type' => 'textarea',
    'id' => 'source',
    'title' => 'Video URL',
    'placeholder' => 'http://...',
    'description' => 'Enter here your Video URL.'
  )
);

//Add post type to WP
$tea->addPostType($tea_configs, $tea_contents);
//Delete variables because we love our server!
unset($tea_configs, $tea_contents);

//Build post types
$tea->buildPostTypes();


//Build term
$tea_configs = array(
  'slug' => 'project-category',
  'post_type' => array('project'),

  'labels' => array(
    'name' => __('Categories'),
    'singular_name' => __('Category'),
  ),

  'hierarchical' => true,
  'query_var' => true,
  'rewrite' => 'project-category',
  'show_admin_column' => true,
);
//Build contents
$tea_contents = array(
  array(
    'type' => 'textarea',
    'id' => 'source',
    'title' => 'Video URL',
    'placeholder' => 'http://...',
    'description' => 'Enter here your Video URL.'
  )
);

//Add term to WP
$tea->addTerm($tea_configs, $tea_contents);
//Delete variables because we love our server!
unset($tea_configs, $tea_contents);

//Build terms
$tea->buildTerms();