[WIP] add error_squiggle gem
[WIP] add error_squiggle gem

```
$ ./local/bin/ruby -e '1.time {}'
-e:1:in `<main>': undefined method `time' for 1:Integer (NoMethodError)

1.time {}
 ^^^^^
Did you mean?  times
```

https://bugs.ruby-lang.org/issues/17930

nobu/rubyspec,ruby/spec,ruby/spec,ruby/spec,nobu/rubyspec,nobu/rubyspec