Feature request: Convert long repeated strings to .repeat() when minifying

[SiddharthShyniben]

Is your feature request related to a problem? Please describe.
Whenever I minify long strings using this minifier, The strings are left untouched. It would be nice if the long strings (Example '░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░') could be changed to '░'.repeat(35), which saves 21 characters

Describe the solution you'd like
Replace long enough strings with .repeat() when minifying

Describe alternatives you've considered
We could do this in the source code itself, but that defeats the purpose of a minifer

Additional context
NA