keymap: use nvim api for setting keymaps

This allows setting a description for each mapping that will render
nicely in plugins like which-key.

Author: willnorris

lua/marks/init.lua

@@ -167,7 +167,8 @@ end
 
 local function apply_mappings()
   for cmd, key in pairs(M.mappings) do
-    vim.cmd("nnoremap <silent> "..key.." <cmd>lua require'marks'."..cmd.."()<cr>")
+    vim.api.nvim_set_keymap("n", key, "", { callback = M[cmd], desc = "marks: "..cmd:gsub("_", " "),
+                                            noremap = true })
   end
 end