The dispatchers used by the RPC client should be defined in the client,
so they have been moved there. Due to this, it also made sense to move
all code related to client configuration and the creation of the RPC
client there too.
Now vim.lsp.start_client is significantly simplified and now mostly
contains logic for tracking open clients.
- Renamed client.new -> client.start
Problem:
The LSP client code is implemented as a complicated closure-class
(class defined in a single function).
Solution:
Move LSP client code to a more conventional Lua class and move to a
separate file.
