fix: Skip lipo if native module is already universal. Add native module fixtures for lipo tests (#126)

* fix: when native modules are already universal, don't lipo. adds `node-mac-permissions` fixture from https://github.com/codebytere/node-mac-permissions and resolves 3 `it.todo` test cases

* add test `different app dirs with different macho files (shim and lipo)`

* add additional test

* PR feedback

* gotta close `fd`

* use `stream` to read first 4 bytes. copy native fixture before packing into asar to leverage `unpack: "**/*.node"` properly.

* convert params to object

* rename `createTestApp` to `createStagingAppDir` and add jsdoc to the function

* compiler error from merge conflict

* update snapshots

* update snapshots

* only check x64Content since it's the tmp app

* compile macho binaries at runtime using hellow-world.c for fixtures in lipo tests

* Update jest.setup.ts

Co-authored-by: Erik Moura <erikian@erikian.dev>

* Update jest.setup.ts

Co-authored-by: Erik Moura <erikian@erikian.dev>

* remove unstable properties for specific keys

* force redo

* update snapshots

* stripping only hello-world from snapshot and only hash from macho-specific asar integrity

* optimize logic :)

---------

Co-authored-by: Erik Moura <erikian@erikian.dev>

src/file-utils.ts

@@ -1,6 +1,7 @@
 import { spawn, ExitCodeError } from '@malept/cross-spawn-promise';
 import * as fs from 'fs-extra';
 import * as path from 'path';
+import { promises as stream } from 'node:stream';
 
 const MACHO_PREFIX = 'Mach-O ';
 
@@ -71,3 +72,14 @@ export const getAllAppFiles = async (appPath: string): Promise<AppFile[]> => {
 
   return files;
 };
+
+export const readMachOHeader = async (path: string) => {
+  const chunks: Buffer[] = [];
+  // no need to read the entire file, we only need the first 4 bytes of the file to determine the header
+  await stream.pipeline(fs.createReadStream(path, { start: 0, end: 3 }), async function* (source) {
+    for await (const chunk of source) {
+      chunks.push(chunk);
+    }
+  });
+  return Buffer.concat(chunks);
+};