chore: move code generation for csaf schema to own crate

Author: tziemek

Cargo.lock

@@ -1,3 +1,3 @@
 [workspace]
-members = ["csaf-validator", "csaf-rs"]
+members = ["csaf-validator", "csaf-rs", "csaf-schema"]
 resolver = "2"

Cargo.toml

@@ -34,6 +34,7 @@ console_error_panic_hook = { version = "0.1", optional = true }
 semver = { version = "1" }
 automod = "1.0"
 jsonschema = { version = "0.37.4", default-features = false }
+csaf-schema = { path = "../csaf-schema", features = ["testcases"] }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 uuid = { version = "1.17.0", features = ["v7", "serde", "js"] }
@@ -50,3 +51,4 @@ thiserror = "2"
 json_dotpath = "1"
 quote = "1"
 proc-macro2 = "1"
+csaf-schema = { path = "../csaf-schema", features = ["testcases"] }