Refactor(Admin): Implement Settings API & AJAX save for Settings Manager

- Refactored WPALLSTARS_Settings_Manager to use WordPress Settings API.
- Stores settings in single 'wpallstars_options' array.
- Implemented robust AJAX saving for specific settings (e.g., color scheme, auto-upload) via WPALLSTARS_Admin_Manager::update_option.
- Updated JS and setting render functions for AJAX.
- Corrected admin menu registration and script enqueue hooks.
- Includes file renames from wp-allstars to wpallstars.

admin/includes/class-hosting-manager.php

@@ -24,7 +24,7 @@ class WP_Allstars_Hosting_Manager {
     public static function display_tab_content() {
         ?>
         <div class="wp-allstars-settings-content tab-content" id="hosting">
-            <div class="wpa-pro-plugins">
+            <div class="wpallstars-pro-plugins">
             <?php
             $hosting_providers = self::get_hosting_providers();
             // Sort providers alphabetically by name
@@ -33,7 +33,7 @@ class WP_Allstars_Hosting_Manager {
             });
             foreach ($hosting_providers as $provider) {
                 ?>
-                <div class="wpa-pro-plugin">
+                <div class="wpallstars-pro-plugin">
                     <h3><?php echo esc_html($provider['name']); ?></h3>
                     <p><?php echo esc_html($provider['description']); ?></p>
                     <?php if (isset($provider['button_group'])): ?>
@@ -100,7 +100,7 @@ class WP_Allstars_Hosting_Manager {
         
         // Add inline CSS for hosting to match the single column layout
         $custom_css = '
-        #hosting .wpa-pro-plugins {
+        #hosting .wpallstars-pro-plugins {
             padding: 15px 20px;
             display: flex;
             flex-direction: column;
@@ -108,7 +108,7 @@ class WP_Allstars_Hosting_Manager {
             max-width: 700px;
             margin: 0 auto;
         }
-        #hosting .wpa-pro-plugin {
+        #hosting .wpallstars-pro-plugin {
             background: #fff;
             border: 1px solid #ddd;
             padding: 24px;
@@ -121,14 +121,14 @@ class WP_Allstars_Hosting_Manager {
             margin-bottom: 24px;
             max-width: 100%;
         }
-        #hosting .wpa-pro-plugin:last-child {
+        #hosting .wpallstars-pro-plugin:last-child {
             margin-bottom: 0;
         }
-        #hosting .wpa-pro-plugin:hover {
+        #hosting .wpallstars-pro-plugin:hover {
             border-color: #2271b1;
             box-shadow: 0 2px 6px rgba(0,0,0,0.15);
         }
-        #hosting .wpa-pro-plugin .button-group {
+        #hosting .wpallstars-pro-plugin .button-group {
             justify-content: flex-start;
         }
         ';