feat(omnisharp): support neotest dotnet (#3051)

Co-authored-by: Rafał Schmidt <rafal.schmidt@allegro.com>

lua/lazyvim/plugins/extras/lang/omnisharp.lua

@@ -96,4 +96,18 @@ return {
       end
     end,
   },
+  {
+    "nvim-neotest/neotest",
+    optional = true,
+    dependencies = {
+      "Issafalcon/neotest-dotnet",
+    },
+    opts = {
+      adapters = {
+        ["neotest-dotnet"] = {
+          -- Here we can set options for neotest-dotnet
+        },
+      },
+    },
+  },
 }