feat: Add banner management functionality

- Implemented a new Banner model to represent banner data.
- Created a BannerRepository for database interactions related to banners.
- Developed a BannerService to handle business logic for banners.
- Added admin views for listing and adding banners.
- Integrated banner hooks for frontend rendering and click tracking.
- Created frontend styles and scripts for banner display and interaction.
- Updated database migrations to include a new banners table.
- Enhanced AdminController to manage banner actions and pages.

app/Repositories/BannerRepository.php

@@ -0,0 +1,81 @@
+<?php
+namespace Sodino\Repositories;
+
+use Sodino\Models\Banner;
+
+/**
+ * Banner Repository
+ */
+class BannerRepository {
+    private $table_name;
+
+    public function __construct() {
+        global $wpdb;
+        $this->table_name = $wpdb->prefix . 'sodino_banners';
+    }
+
+    public function getAll() {
+        global $wpdb;
+        $results = $wpdb->get_results("SELECT * FROM {$this->table_name} ORDER BY priority DESC, id ASC", ARRAY_A);
+        $banners = [];
+        foreach ($results as $result) {
+            $banners[] = new Banner($result);
+        }
+        return $banners;
+    }
+
+    public function getById($id) {
+        global $wpdb;
+        $result = $wpdb->get_row($wpdb->prepare("SELECT * FROM {$this->table_name} WHERE id = %d", $id), ARRAY_A);
+        return $result ? new Banner($result) : null;
+    }
+
+    public function getEnabled() {
+        global $wpdb;
+        $results = $wpdb->get_results("SELECT * FROM {$this->table_name} WHERE status = 1 ORDER BY priority DESC, id ASC", ARRAY_A);
+        $banners = [];
+        foreach ($results as $result) {
+            $banners[] = new Banner($result);
+        }
+        return $banners;
+    }
+
+    public function save(Banner $banner) {
+        global $wpdb;
+        $data = $banner->toArray();
+        unset($data['id'], $data['created_at']);
+
+        if ($banner->id) {
+            $wpdb->update($this->table_name, $data, ['id' => $banner->id]);
+            $this->clearCache();
+            return $banner->id;
+        }
+
+        $wpdb->insert($this->table_name, $data);
+        $this->clearCache();
+        return $wpdb->insert_id;
+    }
+
+    public function delete($id) {
+        global $wpdb;
+        $result = $wpdb->delete($this->table_name, ['id' => $id]);
+        $this->clearCache();
+        return $result;
+    }
+
+    public function incrementImpression($id) {
+        global $wpdb;
+        $wpdb->query($wpdb->prepare("UPDATE {$this->table_name} SET impressions = impressions + 1 WHERE id = %d", $id));
+        $this->clearCache();
+    }
+
+    public function incrementClick($id) {
+        global $wpdb;
+        $wpdb->query($wpdb->prepare("UPDATE {$this->table_name} SET clicks = clicks + 1 WHERE id = %d", $id));
+        $this->clearCache();
+    }
+
+    public function clearCache() {
+        wp_cache_flush();
+    }
+}