Allow passing options for snd/url-pattern

[jahed]

As explained in snd/url-pattern#42, I need to be able to parse parenthesis in my named segment values, otherwise it results in a no-match.

Currently, it doesn't look like redux-little-router supports this, so might be worth adding in.

[oleg-rdk]

is really blocking!

So the options like described here https://github.com/snd/url-pattern#customize-the-pattern-syntax

[uapasha]

facing this too

[ak1394]

Would like to see it configurable as well.

[jkillian]

Would love to see this as well! Ran into a case where I need to be able to accept .s as part of a path param. Which is a shame that it's not possible right now, because I'm trying to switch a large project from another routing library to redux-little-router, and everything has been going really well up to this point!

There does seem to be prior art: #136

@tptee / @stefvhuynh are you willing to review / accept a new PR to add a feature for this?