I integrated #omnisharp extended into the kickstart #neovim config.

With those changes you can jump into definitions and implementations of #csharp dissamblies.

You can find my config here:
https://gitlab.dantalion.nl/configuration/neovim

You can find either kickstart-neovim or omnisharp extended here:

https://github.com/nvim-lua/kickstart.nvim/tree/master

https://github.com/Hoffs/omnisharp-extended-lsp.nvim