Enable inlay hints for the supporting servers (nvim-lua#843)

Author: VlaDexa

init.lua

@@ -438,6 +438,16 @@ require('lazy').setup({
               callback = vim.lsp.buf.clear_references,
             })
           end
+
+          -- The following autocommand is used to enable inlay hints in your
+          -- code, if the language server you are using supports them
+          --
+          -- This may be unwanted, since they displace some of your code
+          if client and client.server_capabilities.inlayHintProvider and vim.lsp.inlay_hint then
+            map('<leader>th', function()
+              vim.lsp.inlay_hint.enable(0, not vim.lsp.inlay_hint.is_enabled())
+            end, '[T]oggle Inlay [H]ints')
+          end
         end,
       })