Updated Class

[admin/class-admin-init.php]
* Added woocommerce_screen_ids
* Removed Admin Notice Handler Class Init
* Added Plugins Settings Page ID To WC Screen ID

[admin/class-admin-settings.php & admin/class-donation-settings.php]
* Working To Get A Prefect Settings Page

[admin/includes/class-admin-functions.php]
* Changed WC_QD()->donation_id to WC_QD_ID

[includes/class-quick-donation-process.php]
* Created Class To Process Front End Donation Form

[includes/class-shortcode-handler.php]
* Created 2 Actions
1. wc_quick_donation_before_donation_form
2. wc_quick_donation_after_donation_form

[woocommerce-quick-donation.php]
* Changed $donation_id from dynimic to static
* Added WC_QD_ID defined variable
* Rearranged Few Loading Files