fix(cli): Actively wait for packages only after tag

Before we waited for native executables, bindings and so forth after
pushing a package. This patch moves this wait after tagging it - that
is, when a package version is actually available.

lib/backend-api/src/types.rs

@@ -280,6 +280,7 @@ mod queries {
     #[derive(cynic::QueryFragment, Debug)]
     pub struct TagPackageReleasePayload {
         pub success: bool,
+        pub package_version: Option<PackageVersion>,
     }
 
     #[derive(cynic::InputObject, Debug)]