Clearing diagnostics

[fredrikekre]

(Perhaps this should be opened in https://github.com/klafyvel/nvim-smuggler but...)

From https://discourse.julialang.org/t/ann-replsmuggler-jl-send-code-to-your-julia-repl-and-get-neo-vim-diagnostics-in-return/111420/2

There seem to be no way to clear the error diagnostics

An option to clear just the smuggle errors would be great. Perhaps these should be automatically cleared when smuggling new code?