Added attach target to dap for c#, fixes #7

config/dap.nix

@@ -39,6 +39,12 @@
                                 return vim.fn.input('Path to dll ', vim.fn.getcwd() .. '/bin/Debug/', 'file')
                             end,
                           },
+        		  {
+        		    type = "coreclr",
+        		    name = "attach - netcoredbg",
+        		    request = "attach",
+        		    processId = require("dap.utils").pick_process,
+        		  }
                         }           	    '';
     };
   };