move json schema to main repo

[maxandersen]

I think https://github.com/jbangdev/jbang-idea/blob/main/src/main/resources/jbang-catalog-schema.json should be in the main repo and published to schemastore.org so it works for other IDE's json editors not just jbang-idea.

[linux-china]

Yes, I think it's better to move it to jbang.dev repo, and all editors can use this schema file from http://jbang.dev/schema.json for code completion.

[linux-china]

@maxandersen could you make a review for https://github.com/jbangdev/jbang-idea/blob/main/src/main/resources/jbang-catalog-schema.json then we can move the schema to main repo and submit a PR to https://github.com/SchemaStore/schemastore

[maxandersen]

Open the pr on jbang then we'll get that reviewed. I don't expect an issue.