Add dotnet for neovim's CoC
diff --git a/modules/neovim/coc/default.nix b/modules/neovim/coc/default.nix
index 7704e74..02a7237 100644
--- a/modules/neovim/coc/default.nix
+++ b/modules/neovim/coc/default.nix
@@ -135,6 +135,8 @@
       ]))
       texlab
       omnisharp-roslyn
+      msbuild
+      dotnet-sdk
       jdt-language-server
       jdk
       nodePackages.pyright