added key_permissions method to package LogState (#251)

Added method to determine what permissions a given `KeyID` has for a
package.

crates/client/src/lib.rs

@@ -146,7 +146,7 @@ impl<R: RegistryStorage, C: ContentStorage, N: NamespaceMapStorage> Client<R, C,
             if let Ok(Some(nm)) = namespace_state {
                 if let warg_protocol::operator::NamespaceState::Imported { registry } = nm {
                     self.api
-                        .set_warg_registry(Some(RegistryDomain::from_str(&registry)?));
+                        .set_warg_registry(Some(RegistryDomain::from_str(registry)?));
                 }
                 true
             } else {

crates/protocol/src/package/state.rs

@@ -218,6 +218,13 @@ impl LogState {
         self.keys.get(key_id)
     }
 
+    /// Gets the key permissions.
+    ///
+    /// Returns `None` if the key id is not recognized.
+    pub fn key_permissions(&self, key_id: &signing::KeyID) -> Option<&IndexSet<model::Permission>> {
+        self.permissions.get(key_id)
+    }
+
     fn initialized(&self) -> bool {
         // The package log is initialized if the hash algorithm is set
         self.algorithm.is_some()