add trusted publishing action repo

Author: marcoieni

repos/rust-lang/crates-io-auth-action.toml

@@ -0,0 +1,8 @@
+org = "rust-lang"
+name = "crates-io-auth-action"
+description = "Get a crates.io temporary access token"
+bots = []
+
+[access.teams]
+infra-admins = "write"
+infra = "triage"