add name_mangling_serde crate

crates/name_mangling_serde/Cargo.toml

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+# See Notices.txt for copyright information
+[package]
+name = "name_mangling_serde"
+description = "serde serializer/deserializer for name mangling"
+workspace = "../.."
+readme = "README.md"
+publish = false
+edition.workspace = true
+license.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+version.workspace = true
+
+[dependencies]
+serde.workspace = true
+serde_json.workspace = true
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(todo)'] }