Extra strings funcs

Added GT,GE,LT and LE funcs for strings

remove interp package

itern is good enough to replace the interp package.
This means there is now only one implementation of the deriveCall and deriveReturn functions
This will make adding new operators easier

feature: regex name expressions

v0.6.2

fix regex for name expressions

remove shorthand for string functions

v0.6.0

regenerate

start removing shorthand for contains, regex, hasPrefix and hasSuffix

v0.5.5

run goderive again

update go to version 1.24

v0.5.4

update check license

remove extra storage of Literal entirely from AST

v0.5.3

remove extra storage of Literal value in ast

removed double parsing

v0.5.2

remove funcs String method in favour of comparing using ToExpr

running of tests and benchmarks do not depend on the testsuite

Running of tests and benchmarks no longer depend on the testsuite, which makes importing this library easier.
Running the testsuite is still forced in CI to avoid regressions.

Validator is only the validator

Parsers and Encoders have moved to their own repositories