Vendor dependencies

Let's see how I like this workflow.

vendor/cxxbridge-macro/src/clang.rs

@@ -0,0 +1,51 @@
+use serde::{Deserialize, Serialize};
+
+pub type Node = clang_ast::Node<Clang>;
+
+#[derive(Deserialize, Serialize)]
+pub enum Clang {
+    NamespaceDecl(NamespaceDecl),
+    EnumDecl(EnumDecl),
+    EnumConstantDecl(EnumConstantDecl),
+    ImplicitCastExpr,
+    ConstantExpr(ConstantExpr),
+    Unknown,
+}
+
+#[derive(Deserialize, Serialize)]
+pub struct NamespaceDecl {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub name: Option<Box<str>>,
+}
+
+#[derive(Deserialize, Serialize)]
+pub struct EnumDecl {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub name: Option<Box<str>>,
+    #[serde(
+        rename = "fixedUnderlyingType",
+        skip_serializing_if = "Option::is_none"
+    )]
+    pub fixed_underlying_type: Option<Type>,
+}
+
+#[derive(Deserialize, Serialize)]
+pub struct EnumConstantDecl {
+    pub name: Box<str>,
+}
+
+#[derive(Deserialize, Serialize)]
+pub struct ConstantExpr {
+    pub value: Box<str>,
+}
+
+#[derive(Deserialize, Serialize)]
+pub struct Type {
+    #[serde(rename = "qualType")]
+    pub qual_type: Box<str>,
+    #[serde(rename = "desugaredQualType", skip_serializing_if = "Option::is_none")]
+    pub desugared_qual_type: Option<Box<str>>,
+}
+
+#[cfg(all(test, target_pointer_width = "64"))]
+const _: [(); core::mem::size_of::<Node>()] = [(); 88];