Make the library compatible with babashka interpreter

[iarenaza]

There is no need to use the .toMatchResult method to get the matching start and end. Those methods are alreay available in the Matcher class. They return the exact same values and they don't need to use an inner class. This access is not allowed when using the babashka Clojure(Script) interpreter.

Babashka is statically compiled using GraalVM, and GraalVM is fairly restrictive with access to classes. Unless you specifically list them in the build configuration, the access is denied. Potentially even it can completely strip the classes out, if it thinks they are not used (it performs some static analysis to determine it, but it can fail depending on how the classes are used).