IMO this is a fairly important missing feature.

Some potential solutions

• https://docs.rs/fixed-size/latest/fixed_size/
• https://docs.rs/fixed_str/latest/fixed_str/
• https://docs.rs/arrayvec/latest/arrayvec/struct.ArrayString.html - not sure this will work
• https://crates.io/crates/deku_string
• https://crates.io/crates/microstr
• https://docs.rs/heapless/0.9.1/heapless/string/type.String.html

A key criteria is we need serde support.