stripAnsi method
Removes ANSI escape sequences (e.g. color codes) from this string.
Returns a new string with all ANSI escape sequences removed.
Example:
'\x1b[31mred\x1b[0m'.stripAnsi(); // 'red'
Implementation
@useResult
String stripAnsi() {
if (isEmpty) return this;
return replaceAll(_ansiEscape, '');
}