Add support for electron v21 prebuilds

[m4heshd]

Electron v21 is the latest stable. Prebuilds are tested against module version 109.

[x6pnda]

Waiting for this build actually! Decided to use another package for our project because of lacking support for node module version 109

[m4heshd]

@x6pnda What's the alternative you went with?

[neoxpert]

The package is just working fine with Electron v21, if you rebuild the native module after install. Alternativly one could also build the module manually and drop the .node module in the respective lookup paths.

At least after two weeks of testing with Electron v21 we did not encounter any issues so far and there should not have been any breaking changes with the current API.

[m4heshd]

@neoxpert In my experience, like 70% of the users shy away from native libs if there aren't any prebuilt binaries for their preferred runtime. For some reason, people hate building native modules locally. 🤷🏽

[mceachen]

LGTM, thanks!

[x6pnda]

@neoxpert Sadly due to various security and machine limits, we are unable to rebuild native modules. That's why it's important to us to have modules support the latest node/electron versions and automatic detection so it downloads the correct version. This is more of a suggestion which can be added in a later stage.