Revert "remove err"

This reverts commit 8b0cf4c.

cli/src/main.rs

@@ -48,7 +48,7 @@ fn main() -> anyhow::Result<()> {
     #[cfg(feature = "go")]
     {
         if !is_package_present(&options) {
-            return anyhow!("Please provide a package name in the typeshare.toml or using --go-package <package name>");
+            return Err(anyhow!("Please provide a package name in the typeshare.toml or using --go-package <package name>"));
         }
     }