fix: Vec<u8> for potentially non-ascii data

[joe-p]

This fixes errors that were thrown when trying to encode non-ascii data as String

It should be noted that this PR does introduce unsafe code because we need to encode the data as string, but the serde serailizer can only encode a string from a &str, thus we must convert a Vec<u8> to a &str to preserve all the data.

[Copilot]

Pull request overview

This PR fixes errors that occurred when trying to encode non-ASCII data as String in MessagePack deserialization. The solution changes several field types from String to Vec<u8> and implements custom serde handling for MessagePack strings that may contain non-UTF-8 data.

Changes:

• Added custom serde module msgpack_string_bytes to handle MessagePack strings as raw bytes
• Changed BlockStateDelta from a type alias to a struct with custom serialization to support Vec<u8> keys
• Updated field types in BlockEvalDelta and BlockAppEvalDelta from String/Vec<String> to Vec<u8>/Vec<Vec<u8>>

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
crates/algod_client/src/msgpack_string_bytes.rs	New serde module for deserializing msgpack strings as raw bytes
crates/algod_client/src/models/block_state_delta.rs	Changed from type alias to struct with custom serialization for byte-keyed HashMap
crates/algod_client/src/models/block_eval_delta.rs	Changed bytes field from Option<String> to Option<Vec<u8>>
crates/algod_client/src/models/block_app_eval_delta.rs	Changed logs field from Option<Vec<String>> to Option<Vec<Vec<u8>>>
crates/algod_client/src/lib.rs	Added msgpack_string_bytes module export
api/oas_generator/rust_oas_generator/templates/models/block/block_state_delta.rs.j2	Template file mirroring changes to block_state_delta.rs
api/oas_generator/rust_oas_generator/templates/models/block/block_eval_delta.rs.j2	Template file mirroring changes to block_eval_delta.rs
api/oas_generator/rust_oas_generator/templates/models/block/block_application_eval_delta.rs.j2	Deleted file (appears to be unused)
api/oas_generator/rust_oas_generator/templates/models/block/block_app_eval_delta.rs.j2	Template file mirroring changes to block_app_eval_delta.rs
api/oas_generator/rust_oas_generator/templates/base/msgpack_string_bytes.rs.j2	Template file for msgpack_string_bytes module
api/oas_generator/rust_oas_generator/templates/base/lib.rs.j2	Template file mirroring changes to lib.rs
api/oas_generator/rust_oas_generator/generator/template_engine.py	Added generation logic for msgpack_string_bytes.rs

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