feat(send.lua): add debug prints for lines and row in get_code_to_sen…

…d function to aid in debugging and understanding the function's behavior

lua/r/send.lua

@@ -140,6 +140,9 @@ local function get_code_to_send(txt, row)
         row = end_row
     end
 
+    vim.print("lines: ", lines)
+    vim.print("row: ", row)
+
     return lines, row
 end
 
@@ -517,6 +520,7 @@ end
 M.line = function(m)
     local lnum = vim.api.nvim_win_get_cursor(0)[1]
     local line = vim.fn.getline(lnum)
+
     local lang = get_lang()
     if lang == "chunk_child" then
         if type(m) == "boolean" and m then