Rename controller namespaces: drop V1 prefix, clarify roles

V1/Admin     -> Company       (company-scoped controllers)
V1/SuperAdmin -> Admin        (platform-wide admin controllers)
V1/Customer  -> CustomerPortal (customer-facing portal)
V1/Installation -> Setup      (installation wizard)
V1/PDF       -> Pdf           (consistent casing)
V1/Modules   -> Modules       (drop V1 prefix)
V1/Webhook   -> Webhook       (drop V1 prefix)

The V1 prefix served no purpose - API versioning is in the route prefix
(/api/v1/), not the controller namespace. "Admin" was misleading for
company-scoped controllers. "SuperAdmin" is now simply "Admin" for
platform administration.

app/Http/Controllers/CustomerPortal/General/DashboardController.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace App\Http\Controllers\CustomerPortal\General;
+
+use App\Http\Controllers\Controller;
+use App\Models\Estimate;
+use App\Models\Invoice;
+use App\Models\Payment;
+use Illuminate\Http\Request;
+use Illuminate\Http\Response;
+use Illuminate\Support\Facades\Auth;
+
+class DashboardController extends Controller
+{
+    /**
+     * Handle the incoming request.
+     *
+     * @return Response
+     */
+    public function __invoke(Request $request)
+    {
+        $user = Auth::guard('customer')->user();
+
+        $amountDue = Invoice::whereCustomer($user->id)
+            ->where('status', '<>', 'DRAFT')
+            ->sum('due_amount');
+        $invoiceCount = Invoice::whereCustomer($user->id)
+            ->where('status', '<>', 'DRAFT')
+            ->count();
+        $estimatesCount = Estimate::whereCustomer($user->id)
+            ->where('status', '<>', 'DRAFT')
+            ->count();
+        $paymentCount = Payment::whereCustomer($user->id)
+            ->count();
+
+        return response()->json([
+            'due_amount' => $amountDue,
+            'recentInvoices' => Invoice::whereCustomer($user->id)->where('status', '<>', 'DRAFT')->take(5)->latest()->get(),
+            'recentEstimates' => Estimate::whereCustomer($user->id)->where('status', '<>', 'DRAFT')->take(5)->latest()->get(),
+            'invoice_count' => $invoiceCount,
+            'estimate_count' => $estimatesCount,
+            'payment_count' => $paymentCount,
+        ]);
+    }
+}