docs(rust): add an end-to-end NFT mint and transfer recipe

[BrianSeong99]

Goal

Add a focused Rust recipe showing the complete v0.16 NFT flow:

1. Create authenticated Alice and Bob wallets.
2. Create a user NonFungibleFaucet.
3. Compute an NFT asset commitment from metadata and a salt.
4. Mint the NFT to Alice through the production MintNote / MintNoteStorage flow.
5. Have Alice consume and transfer the NFT to Bob.
6. Have Bob consume it and verify final ownership.

Dependency

Blocked until the tutorials Rust client is migrated from v0.15 to v0.16. Philipp is working on that migration. Implement this from updated main after it lands; do not introduce a second temporary dependency stack.

Deliverables

• A concise page under docs/src/rust-client/.
• A matching runnable binary under rust-client/src/bin/.
• Registration in docs/src/lib.rs and the Rust tutorial runner.
• The documentation and runnable example use the same flow.
• The recipe explains that compute_asset_commitment(metadata, salt) is an off-chain convention. The faucet does not validate the metadata, salt, or knowledge of the preimage.

Acceptance criteria

• Creates a non-fungible faucet using the v0.16 standard APIs.
• Mints one NFT to Alice using MintNote / MintNoteStorage.
• Alice consumes and transfers the NFT to Bob using PaymentNoteDescription and build_pay_to_id.
• Bob consumes the transfer note.
• The example verifies Alice no longer owns the NFT and Bob does.
• Rust checks and documentation tests pass.
• yarn tutorials --rust=nft_mint_transfer passes.
• The ingested page renders and the Docs build passes.

Out of scope

Fees, burning, Web/React SDKs, marketplace behavior, and metadata hosting. Reuse the canonical v0.16 network and fee bootstrap established by the migration without teaching fees in this recipe.