fix(dmg): build under Big Sur is not possible if license file is used

[k2s]

Fixes #5319

In Big Sur the long time deprecated Rez and hdiutil unflatten tools were removed.
I am injecting DMG license with dmg-license package by keeping compatibility with TXT/RTF license and buttons files.

In this first version I keep all the old code.

[develar]

Thanks a lot!

[mmaietta]

Quick note: This PR forgot to update the yarn.lock and also broke master branch.

/Users/travis/build/electron-userland/electron-builder/packages/dmg-builder/src/dmgLicense.ts
  12:98  error  Don't use `Object` as a type. The `Object` type actually means "any non-nullish value", so it is marginally better than `unknown`.
- If you want a type meaning "any object", you probably want `Record<string, unknown>` instead.
- If you want a type meaning "any value", you probably want `unknown` instead  @typescript-eslint/ban-types
  37:9   error  'label' is never reassigned. Use 'const' instead                                                                                                                                                                                                                                                                  prefer-const
✖ 2 problems (2 errors, 0 warnings)
  1 error and 0 warnings potentially fixable with the `--fix` option.

[aabuhijleh]

Hi, is this released on the latest version on npm ?

I tested with 22.9.1 and I'm still getting this error hdiutil: unflatten: verb not recognized on Big Sur

[mmaietta]

Try latest 22.10.x