Add extra maps

[nielssteenbakker]

A limited number of maps is included in this library.

[bitbruder]

There is no right or wrong amount to the provided maps in this library. You can create your own custom maps with this configurator! 😊

https://jvm-docs.vercel.app/docs/available-maps#generating-maps

[nielssteenbakker]

I know, that is why I created a pull request to close this 'issue'.

[alfangr]

I found a great feature to convert SVG maps to jvectormap files, which might be useful.

Check this link https://ruibarreira.github.io/jvectormap-svg-converter/