Tracking release 0.0.9

[oscartbeaumont]

Development:

• Export comments from Rust
• automatically_derived on proc macros output
• tokio::sync::* types added to Specta
• Specta prevent exporting a type with a reserved name in Typescript #7
• generate ts types with type keyword instead of interface #19
• export as field?: T | null when skip_serializing_if = "Option::is_none" #9
• Builder syntax for ExportConfiguration + put the export path onto it #11
• Convert CommentStyle enum into trait and take as runtime param #10
• Custom error types for exporters using thiserror instead of just using String #12

Release:

• Merge specta from rspc back into specta
• Make Specta repo public
• Corresponding rspc release
• Corresponding PCR release