feat: borsh zero copy macro

renamed meta -> __meta, adapted zerocopy imports to use light_zero_copy::zerocopy

feat: derive zero copy from

refactor: light-sdk and tests wip

reenabled new address creation

stash need to derive hasher for zero copy

Author: ananas-block

.github/workflows/rust.yml

@@ -49,6 +49,7 @@ jobs:
               light-verifier
               light-merkle-tree-metadata
               light-zero-copy
+              light-zero-copy-derive
               light-hash-set
               light-indexed-merkle-tree
               light-batched-merkle-tree