add zdfz models and macros for auto client generation

lib/clients/osiris/Cargo.toml

@@ -5,13 +5,19 @@ edition.workspace = true
 description = "Osiris client library"
 license = "MIT OR Apache-2.0"
 
+[features]
+default = []
+zdfz = ["dep:zdfz-models"]
+
 [dependencies]
+zdfz-models = { path = "../../../../../zdfz/sdk/models", optional = true }
 # Core dependencies
 serde.workspace = true
 serde_json.workspace = true
 anyhow.workspace = true
 thiserror.workspace = true
 chrono.workspace = true
+paste = "1.0"
 
 # HTTP client
 reqwest = { version = "0.12", default-features = false, features = ["json"] }