lv_table_set_cell_user_data() function
Add custom user data to the cell.
Arguments
obj
pointer to a Table object
row
id of the row [0 .. row_cnt -1]
col
id of the column [0 .. col_cnt -1]
user_data
pointer to the new user_data. Should be allocated by `lv_malloc`, and it will be freed automatically when the table is deleted or when the cell is dropped due to lower row or column count.