Store regexes as strings and compile them at runtime

[Kitisaks]

OTP 28 has changed how regexes are compiled, and you can no longer safely inject %Regex{} structs into module attributes at compile time and reuse them in quoted expressions or macros.

[warmwaffles]

This is effectively the same as #99 but with a runtime penalty.

[jaeyson]

much better in #99

[noizu]

I've pushed a hex build that works on otp28, please send and PRs to noizu-labs-scaffolding/inflex28

def deps do
[
{:inflex28, "~> 2.1.0"}
]
end