add toggle lsp diagnostic

nvim/lua/toggle_lsp_diagnostics.lua

@@ -0,0 +1,11 @@
+local diagnostics_active = true
+local toggle_diagnostics = function()
+    diagnostics_active = not diagnostics_active
+    if diagnostics_active then
+        vim.diagnostic.show()
+    else
+        vim.diagnostic.hide()
+    end
+end
+
+vim.keymap.set('n', '<leader>td', toggle_diagnostics)