Update gitignore (sorry)

electron/node_modules/app-builder-lib/out/targets/MsiTarget.d.ts

@@ -0,0 +1,22 @@
+import { Arch } from "builder-util";
+import { MsiOptions } from "../";
+import { Target } from "../core";
+import { WinPackager } from "../winPackager";
+export default class MsiTarget extends Target {
+    private readonly packager;
+    readonly outDir: string;
+    private readonly vm;
+    readonly options: MsiOptions;
+    constructor(packager: WinPackager, outDir: string);
+    /**
+     * A product-specific string that can be used in an [MSI Identifier](https://docs.microsoft.com/en-us/windows/win32/msi/identifier).
+     */
+    private get productMsiIdPrefix();
+    private get iconId();
+    private get upgradeCode();
+    build(appOutDir: string, arch: Arch): Promise<void>;
+    private light;
+    private getCommonWixArgs;
+    private writeManifest;
+    private computeFileDeclaration;
+}