Implement admin and user management foundation

app/Http/Controllers/Admin/UserManagementController.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Admin\UpdateUserAdminStatusRequest;
+use App\Models\User;
+use Illuminate\Http\RedirectResponse;
+use Inertia\Inertia;
+use Inertia\Response;
+
+class UserManagementController extends Controller
+{
+    public function index(): Response
+    {
+        return Inertia::render('admin/users/Index', [
+            'status' => session('status'),
+            'users' => User::query()
+                ->orderByDesc('is_admin')
+                ->orderBy('name')
+                ->get(),
+        ]);
+    }
+
+    public function update(UpdateUserAdminStatusRequest $request, User $user): RedirectResponse
+    {
+        $user->forceFill([
+            'is_admin' => $request->boolean('is_admin'),
+        ])->save();
+
+        $status = $user->is_admin
+            ? "{$user->name} now has admin access."
+            : "{$user->name} no longer has admin access.";
+
+        return to_route('admin.users.index')->with('status', $status);
+    }
+}

app/Http/Requests/Admin/UpdateUserAdminStatusRequest.php

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+<?php
+
+namespace App\Http\Requests\Admin;
+
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateUserAdminStatusRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return $this->user()?->is_admin === true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'is_admin' => ['required', 'boolean'],
+        ];
+    }
+}