Add a cargo-team repo

The Cargo team would like to have a separate repo for storing things
that are more directed towards the team, and not directly related to the
cargo tool. Primarily this will start with meeting notes, but we may
expand to other things we want to capture.

Author: ehuss

repos/rust-lang/cargo-team.toml

@@ -0,0 +1,7 @@
+org = "rust-lang"
+name = "cargo-team"
+description = "Coordination repository for the Cargo team"
+bots = ["rustbot", "rfcbot"]
+
+[access.teams]
+cargo = "write"