import-grammars should format output using prettier

[Clemens Pohle]

one option could be:
exec("npx prettier ./src/parser/config/nodeTypesConfig.json --write");
or use the API:
https://prettier.io/docs/en/api.html

• move prettier from devDependencies to dependencies

[Clemens Pohle]

I just thought about making import-grammars a npm run script instead of including this into the CLI of the parser?

[ChristianHuehn]

The idea in general is nice. But I would argue that the output doesn't have to be human readable. Most IDEs and Editors support this out of the box. I would rate this below low priority therefor I close it.