[MM-36326][MM-45669] Added Native Node Module support - incl demo to fix DND issue (#2195)

* [MM-36326] Added Native Node Module support - incl demo to fix DND issue

* Fix OS per build

* Fix to include priority alarms on Windows

* Update node command

* Fixes for mac (only work on non-MAS build)

* Attempt to rebuild properly since electron-builder is having issues with a module

* Show me more logs maybe idk

* Try with ignore-scripts

* Force async to work asyncly

* PR feedback and ESLint fixes

* Add comment for node-gyp

* Revert me: test msi and mac installer

* Revert me too

* Try reverting back to the old system cause the new one miraculously broke...

* Add ignore scripts to makefile

* Ignore non-macho files :P

* Revert "Revert me too"

This reverts commit 074dc9551a2d8ce34a23a3abaeed937d957e8b76.

* Revert "Revert me: test msi and mac installer"

This reverts commit 0ac998c26a824e7136bdfdc825280a407bb1aa7f.

scripts/beforepack.js

@@ -0,0 +1,34 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+const {exec} = require('child_process');
+
+exports.default = async function beforePack(context) {
+    return new Promise((resolve, reject) => {
+        const arch = getArch(context.arch);
+        exec(`npm run postinstall -- --arch ${arch}`, (error) => {
+            if (error) {
+                reject(error);
+            } else {
+                resolve();
+            }
+        });
+    });
+};
+
+function getArch(arch) {
+    switch (arch) {
+    case 0:
+        return 'ia32';
+    case 1:
+        return 'x64';
+    case 2:
+        return 'armv7l';
+    case 3:
+        return 'arm64';
+    case 4:
+        return 'universal';
+    default:
+        return '';
+    }
+}