refactor for stronger RawPduId type

implement standard traits for PduCount

enable serde for arrayvec

typedef various shortid's

pducount simplifications

split parts of pdu_metadata service to core/pdu and api/relations

remove some yields; improve var names/syntax

tweak types for limit timeline limit arguments

Signed-off-by: Jason Volk <jason@zemos.net>

Cargo.toml

@@ -27,6 +27,7 @@ name = "conduit"
 
 [workspace.dependencies.arrayvec]
 version = "0.7.4"
+features = ["std", "serde"]
 
 [workspace.dependencies.const-str]
 version = "0.5.7"