Add option to proceed with implicit cradle without error message

[xeruf]

Your environment

[nix-shell:~/data/1-projects/done/done/pkgs/core-test]$ haskell-language-server-wrapper --probe-tools
haskell-language-server version: 0.5.0.0 (GHC: 8.8.4) (PATH: /nix/store/lh1kn4x6jsdm5v3vv0vgx4kcd35sv8mc-haskell-language-server-0.5.0.0/bin/haskell-language-server-wrapper)
Tool versions found on the $PATH
cabal:          3.2.0.0
stack:          Not found
ghc:            8.8.4

• Which lsp-client do you use: https://github.com/gtache/intellij-lsp

Steps to reproduce

Start language server

Expected behaviour

I can give it a CLI flag to not warn about using implicit cradle.

Actual behaviour

I get annoying popups:

No cradle found for test/Test/Done.hs.\n Proceeding with implicit cradle

So I run gen-hie just to get rid of this error-message, even though I don't want to mess with the hie.yaml at all.

[jneira]

The popup is not longer shown