Add cargo-hakari

Signed-off-by: Marcel Müller <neikos@neikos.email>

hakari/Cargo.toml

@@ -0,0 +1,18 @@
+# This file is generated by `cargo hakari`.
+# To regenerate, run:
+#     cargo hakari generate
+
+[package]
+name = "hakari"
+version = "0.1.0"
+edition = "2021"
+description = "workspace-hack package, managed by hakari"
+# You can choose to publish this crate: see https://docs.rs/cargo-hakari/latest/cargo_hakari/publishing.
+publish = false
+
+# The parts of the file between the BEGIN HAKARI SECTION and END HAKARI SECTION comments
+# are managed by hakari.
+
+### BEGIN HAKARI SECTION
+
+### END HAKARI SECTION