Port necessary interegular functionality

[drbh]

This is a work in progress PR, opening for visibility and feedback

This PR (will) add interegular FSM creation logic. Currently this is maintained as a separate repo however this implementation moves this logic into outlines with the rust rewrite.

todo

• implement SimpleParser to process regexpr
• implement basic Alphabet<T>
• implement basic Fsm<G>
• revisit the concept of AnythingElse to use better types
• implement ParsePattern (rewrite current impl to only use concrete types)

$ cargo test --package outlines-core-rs --lib -- interegular::fsm::tests --show-output
running 19 tests
test interegular::fsm::tests::test_is_empty ... ok
test interegular::simple_parser::tests::test_any ... ok
test interegular::fsm::tests::test_simple_fsm ... ok
test interegular::fsm::tests::test_times ... ok
test interegular::fsm::tests::test_star ... ok
test interegular::fsm::tests::test_reverse ... ok
test interegular::simple_parser::tests::test_anyof_b ... ok
test interegular::simple_parser::tests::test_any_but ... ok
test interegular::fsm::tests::test_reduce ... ok
test interegular::fsm::tests::test_concatenate ... ok
test interegular::simple_parser::tests::test_anyof ... ok
test interegular::simple_parser::tests::test_multiple ... ok
test interegular::fsm::tests::test_intersection ... ok
test interegular::simple_parser::tests::test_no_match_display ... ok
test interegular::fsm::tests::test_union ... ok
test interegular::simple_parser::tests::test_parser_with_complex_input ... ok
test interegular::simple_parser::tests::test_peek_static ... ok
test interegular::simple_parser::tests::test_static_b ... ok
test interegular::simple_parser::tests::test_static_match ... ok

successes:

successes:
    interegular::fsm::tests::test_concatenate
    interegular::fsm::tests::test_intersection
    interegular::fsm::tests::test_is_empty
    interegular::fsm::tests::test_reduce
    interegular::fsm::tests::test_reverse
    interegular::fsm::tests::test_simple_fsm
    interegular::fsm::tests::test_star
    interegular::fsm::tests::test_times
    interegular::fsm::tests::test_union
    interegular::simple_parser::tests::test_any
    interegular::simple_parser::tests::test_any_but
    interegular::simple_parser::tests::test_anyof
    interegular::simple_parser::tests::test_anyof_b
    interegular::simple_parser::tests::test_multiple
    interegular::simple_parser::tests::test_no_match_display
    interegular::simple_parser::tests::test_parser_with_complex_input
    interegular::simple_parser::tests::test_peek_static
    interegular::simple_parser::tests::test_static_b
    interegular::simple_parser::tests::test_static_match

test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s