- Made all the mechanics of grammar parsing (GBNFGrammarParser, ParseState) internal. Just call `Grammar.Parse("whatever")`.
 - Added a `GrammarRule` class which validates elements on construction (this allows constructing grammar without parsing GBNF).
   - It should be impossible for a `GrammarRule` to represent an invalid rule.

This commit includes changes to compile en VS Mac + changest to use llama2 not codellama.

It includes MacOS binaries in memory and metal

Translating the grammar parser

SymbolIds is now SortedDictionary (although I'm not sure it really needs to be) because the test was failing due to expected value being in another order. The C++ data structure if SymbolIds is std::map<std::string, uint32_t> so the items are ordered by key.

Fixed those cublas paths again

Fixed the cublas linux paths again

fixed linux cublas paths in final step

Fixed linux cublas filenames

Linux cublas

Based on this version: 6b73ef1201

Fixed cuda paths again

Fixed paths

* new github action to build deps (manually triggered)

Fix Tokenize of new line, Remove space inserts

- Just convert it to a `string`, nice and simple
 - Write the bytes to a `Span<byte>` no allocations
 - Write the chars to a `StringBuilder` potentially no allocations

Removed unnecessary parameters from some low level sampler methods

- Fixed multiple enumeration
 - Fixed newline penalisation

Two small improvements to the native sampling API