add pinocchio create-token example

[MarkFeder]

Adds a Pinocchio implementation of tokens/create-token, continuing the Pinocchio token-examples lane after transfer-tokens (#596) and escrow (#598).

What it does

Creates an SPL Token mint and attaches an on-chain Metaplex metadata account (name, symbol, URI) — the same flow as the existing anchor and native options.

Notes

• The Metaplex Token Metadata program has no typed Pinocchio crate, so the CreateMetadataAccountV3 CPI is built by hand (raw InstructionView / cpi::invoke), matching the on-chain wire format.
• Single instruction, no discriminator byte — the instruction data is Borsh [name, symbol, uri, decimals], identical to the native example's wire format.
• The bankrun test loads the Metaplex program from a mainnet-dumped token_metadata.so fixture via a postinstall script, the same approach as the anchor example.
• The mint authority is passed as a non-signer and aliased to the payer (which signs), mirroring the native example.

Files

• New: tokens/create-token/pinocchio/ (program + bankrun test)
• Edited: root Cargo.toml (workspace member), README.md (pinocchio link), Cargo.lock