feat: add workspace-level root package

Add a root package `mingling-workspace` with an empty `main.rs` to
improve Cargo workspace compatibility.

1 files changed, 6 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 8baadbb..558a4b8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -77,3 +77,9 @@ lto = "fat"
 codegen-units = 1
 panic = "abort"
 strip = true
+
+[package]
+name = "mingling-workspace"
+version.workspace = true
+edition.workspace = true
+publish = false