Move WebMWriter library to node_modules

[McGiverGim]

• Moves the WebMWriter to be managed by yarn/npm.
• Upgrades the library from version 0.1.1 to the latest 0.3.0. It seems compatible or at least my tests worked perfectly.

For a future, maybe is good to threat different when in Chrome or when in Node, the library has support for both.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

No Coverage information
0.0% Duplication

[mikeller]

I wouldn't worry too much about the future of the Chrome Web app:

• Google has announced that they will finally be pulling the plug on Chrome Web Apps in Chrome by the end of the year;
• even without this, we only have 33 users of the Chrome Web app version of the blackbox explorer.

We should probably just make the decision that the current versions of the configurator / blackboxe explorer will be the last ones to support Chrome Web Apps.