feat: implement AdminController for CMS management and AppServiceProvider for application bootstrapping

app/Models/ColumnComment.php

@@ -1,34 +0,0 @@
-<?php
-
-namespace App\Models;
-
-use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Model;
-
-class ColumnComment extends Model
-{
-    use HasFactory;
-    
-    /**
-     * The attributes that are mass assignable.
-     *
-     * @var array
-     */
-    protected $fillable = [
-        'table_name',
-        'record_id',
-        'column_name',
-        'comment',
-        'column_value',
-        'user_id',
-        'ip_address',
-    ];
-    
-    /**
-     * Get the user that created the comment.
-     */
-    public function user()
-    {
-        return $this->belongsTo(User::class);
-    }
-}