Ignore words define/declared outside the project

[Nahor]

Assuming it's possible, it would be great if the extension could query the language server to check if an unknown word matches an entity declared/defined outside the project (system headers, Rust crates, NPM packages, ...). This would help automatically ignore words that are created by third-party libraries and remove the tedium to ignore the same words over and over just because a library is popular and used in a lot of different projects.

There would be 3 states:

• disable (current behavior)
• add to words list
• add to ignore list

Maybe also add an action to get both lists so a developer could add those words to dictionaries/configuration files and be ignored when running cspell checks without the language server