Add better movement and LSP-related help

lua/custom/plugins/lsp-signature.lua

@@ -7,5 +7,10 @@ return {
   },
   config = function(_, opts)
     require('lsp_signature').setup(opts)
+
+    vim.keymap.set('n', '<leader>cph', function()
+      -- NOTE: For now, have to close it manually
+      require('lsp_signature').toggle_float_win()
+    end, { noremap = true, silent = true, desc = '[C]ode [P]arameter [H]elp' })
   end,
 }