Support for `Colored`/terminal escape codes

Thanks for the nifty package, it's very cool! I'd love to be able to use it with [Colored](https://github.com/colored-rs/colored), but using coloured text in a table breaks the layout:

```rust
use colored::Colorize;
use termimad::{MadSkin};

fn main() {
let header = "|:-|:-\n|**Example**|**Table**|\n|-|-";
let col1 = "Colourful text".bright_red();
let col2 = "breaks the table :(".bold();
let rest = format!("| {col1} | {col2} |");
let table = format!("{header}\n{rest}\n|-");

MadSkin::default().print_text(&table);
}
```

```console
$ cargo run
┌───────────────────────┬───────────────────────────┐
│Example │Table │
├───────────────────────┼───────────────────────────┤
│Colourful text│breaks the table :(│
└───────────────────────┴───────────────────────────┘
```

My guess is it's counting escape codes when it shouldn't.