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/Estimate/AcceptEstimateController.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Http\Controllers\CustomerPortal\Estimate;
+
+use App\Http\Controllers\Controller;
+use App\Http\Resources\Customer\EstimateResource;
+use App\Models\Company;
+use App\Models\Estimate;
+use Illuminate\Http\Request;
+use Illuminate\Http\Response;
+use Illuminate\Support\Facades\Auth;
+
+class AcceptEstimateController extends Controller
+{
+    /**
+     * Handle the incoming request.
+     *
+     * @param  Estimate  $estimate
+     * @return Response
+     */
+    public function __invoke(Request $request, Company $company, $id)
+    {
+        $estimate = $company->estimates()
+            ->whereCustomer(Auth::guard('customer')->id())
+            ->where('id', $id)
+            ->first();
+
+        if (! $estimate) {
+            return response()->json(['error' => 'estimate_not_found'], 404);
+        }
+
+        $estimate->update($request->only('status'));
+
+        return new EstimateResource($estimate);
+    }
+}