[feature] Share same json schemas

[Freed-Wu]

There are many coc extensions need json schema. Such as coc-yaml, coc-toml. Is it possible to let them share a same json schemas to save storage?

[Freed-Wu]

For example, coc-yaml has a list yamlschema. Why not let json, toml or other file format which can be converted to a json use the list to select shared schema?