Add support for cargo-dinghy (#133)

tools/codegen/base/cargo-dinghy.json

@@ -0,0 +1,10 @@
+{
+  "repository": "https://github.com/sonos/dinghy",
+  "tag_prefix": "",
+  "asset_name": "${package}-${os_name}-${version}.tgz",
+  "bin": "${package}-${version}/${package}${exe}",
+  "platform": {
+    "x86_64_linux_musl": {},
+    "x86_64_macos": {}
+  }
+}