Add external/rust/crates/tinyjson to manifest

aosp/2494566 imports tinyjson to `main` branch but `tinyjson` hasn't been added to manifest yet.

Bug: 293490257
Change-Id: I4bff6d76d2ccaef329156ef760694dd9ca5b62d7
1 file changed
tree: c4efe2b1d265e7995a61b41a603c4ea5da7966f9
  1. default.xml
  2. GLOBAL-PREUPLOAD.cfg
  3. OWNERS