[1.x] Add $request->inertia() IDE helper (#625)

* Add `$request->inertia()` IDE helper

* Re-export IDE helper file

Author: ycs77

.gitattributes

@@ -7,7 +7,6 @@
 /.gitignore export-ignore
 /.github export-ignore
 /.php-cs-fixer.dist.php export-ignore
-/_ide_helpers.php export-ignore
 /phpunit.xml.dist export-ignore
 /tests export-ignore
 /CHANGELOG.md export-ignore

_ide_helpers.php

@@ -33,6 +33,18 @@ class TestResponse
 namespace Illuminate\Support\Facades {
 
     /**
+     * @see \Inertia\ServiceProvider
+     *
+     * @method static bool inertia()
+     */
+    class Request
+    {
+        //
+    }
+
+    /**
+     * @see \Inertia\ServiceProvider
+     *
      * @method static self inertia(string $uri, string $component, array $props = [])
      */
     class Route
@@ -41,9 +53,24 @@ class Route
     }
 }
 
+namespace Illuminate\Http {
+
+    /**
+     * @see \Inertia\ServiceProvider
+     *
+     * @method bool inertia()
+     */
+    class Request
+    {
+        //
+    }
+}
+
 namespace Illuminate\Routing {
 
     /**
+     * @see \Inertia\ServiceProvider
+     *
      * @method self inertia(string $uri, string $component, array $props = [])
      */
     class Router