added leave request, profile and staff members controllers

app/Models/LeaveRequest.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class LeaveRequest extends Model
+{
+    protected $casts = [
+        'start_date' => 'date',
+        'end_date' => 'date',
+    ];
+    protected $guarded = ['id'];
+    public function staff()
+    {
+        return $this->belongsTo(StaffMember::class, 'staff_member_id');
+    }
+
+    // In StaffMember.php
+    public function leaveRequests()
+    {
+        return $this->hasMany(LeaveRequest::class, 'staff_member_id');
+    }
+}