Manage package info as JSON

tools/codegen/base/cross.json

@@ -0,0 +1,13 @@
+{
+  "repository": "https://github.com/cross-rs/cross",
+  "tag_prefix": "v",
+  "asset_name": [
+    "${package}-${rust_target}.tar.gz",
+    "${package}-v${version}-${rust_target}.tar.gz"
+  ],
+  "platform": {
+    "x86_64_linux_musl": {},
+    "x86_64_macos": {},
+    "x86_64_windows": {}
+  }
+}