pogo-masterfile-macros

Procedural derive macros backing the pogo-masterfile-types crate.

Three derives are exported:

• AllVariants — adds pub const ALL: [Self; N] and pub const SIZE: usize.
• AsStr — adds pub const fn as_str(&self) -> &'static str and Display. Reads #[serde(rename = "...")] per variant.
• FromStrEnum — adds impl FromStr whose Err is pogo_masterfile_types::UnknownTemplateId.

All three apply to enums with unit variants only (no fields). Mix and match as needed.

Re-exported from pogo-masterfile-types so consumers usually do not need a direct dependency.