Sort out the awful imports experience

[keynmol]

This is just too much:

import langoustine.lsp.requests.*
import langoustine.lsp.structures.*
import langoustine.lsp.json.*
import langoustine.lsp.enumerations.*

import langoustine.lsp.RuntimeBase.uinteger
import langoustine.lsp.RuntimeBase.DocumentUri

We should aim to somehow bring all of them into the same all object.

I thought of using export clause which seems designed for this exact purpose, but I worry about the IDE experience