refactor(build): use dmgbuild to create dmgs (#1664)

* refactor(appdmg): make dmgs with dmgbuild

* fix(appdmg.sh): typo

* refactor(appdmg.sh): don't generate config on the fly

* fix(dmgbuild): icon file

* fix(gitignore): dmgbuild settings

* chore(resources): update readme with new files

* chore(resources/macos): add missing newline

scripts/README.md

@@ -10,7 +10,7 @@ Various scripts and configurations used to configure, build, and package Lite XL
 
 ### Package
 
-- **appdmg.sh**:    Create a macOS DMG image using [AppDMG][1].
+- **appdmg.sh**:    Create a macOS DMG image using [dmgbuild][1].
 - **appimage.sh**:  [AppImage][2] builder.
 - **innosetup.sh**: Creates a 32/64 bit [InnoSetup][3] installer package.
 - **package.sh**:   Creates all binary / DMG image / installer / source packages.
@@ -25,6 +25,6 @@ Various scripts and configurations used to configure, build, and package Lite XL
 - **generate_header.sh**: Generates a header file for native plugin API
 - **keymap-generator**: Generates a JSON file containing the keymap
 
-[1]: https://github.com/LinusU/node-appdmg
+[1]: https://github.com/dmgbuild/dmgbuild
 [2]: https://docs.appimage.org/
 [3]: https://jrsoftware.org/isinfo.php