refactor(services): move ModuleInstaller to app/Support/Module

ModuleInstaller has the same shape as Updater (moved in 7cf72b9f): every method is public static, no constructor, no DI, no instance state. It orchestrates marketplace operations — fetch catalog, download zip, verify checksum, unzip, copy files, run module:migrate/module:enable, dispatch install/enable events — but the orchestration itself is stateless procedural plumbing.

Emitting events and writing to the Module eloquent model doesn't make it a service; plenty of static helpers touch models. The distinguishing factor is stateless-procedural vs DI-injected-workflow, and this is clearly the former.

4 consumers updated: ModulesController, ModuleInstallationController, InstallModuleCommand, and a doc comment in config/invoiceshelf.php. 350 tests still pass.

This leaves app/Services/ with no single-file driver-less subdirs except Mail/Module/Pdf/Storage which have multiple files each. The Module/ subdir in Services is now deleted entirely — the marketplace installer moved out and there were no other files in there.

app/Http/Controllers/Admin/Modules/ModuleInstallationController.php

@@ -5,7 +5,7 @@ namespace App\Http\Controllers\Admin\Modules;
 use App\Http\Controllers\Controller;
 use App\Http\Requests\UnzipUpdateRequest;
 use App\Http\Requests\UploadModuleRequest;
-use App\Services\Module\ModuleInstaller;
+use App\Support\Module\ModuleInstaller;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 

app/Http/Controllers/Admin/Modules/ModulesController.php

@@ -7,7 +7,7 @@ use App\Events\ModuleEnabledEvent;
 use App\Http\Controllers\Controller;
 use App\Http\Resources\ModuleResource;
 use App\Models\Module as ModelsModule;
-use App\Services\Module\ModuleInstaller;
+use App\Support\Module\ModuleInstaller;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 use Nwidart\Modules\Facades\Module;