Fixes for the Localization package (#26)

This PR contains the work done to

Reviewed-on: rock-n-code/loud-amsterdam#26
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

Packages/Localization/Sources/Public/Methods/Localize.swift

@@ -12,6 +12,16 @@ public struct Localize: Sendable {
     /// The backend that resolves keys against the catalog.
     private let resolver: any CatalogResolving
 
+    // MARK: Computed
+
+    /// The outcome of reading the bundle's String Catalog.
+    ///
+    /// Resolution degrades to returning raw keys rather than failing, so check this once at startup
+    /// and warn when it is not ``CatalogState/loaded``.
+    public var catalogState: CatalogState {
+        resolver.state
+    }
+
     // MARK: Initializers
 
     /// Creates a localizer backed by the String Catalog in the given bundle.
@@ -22,7 +32,7 @@ public struct Localize: Sendable {
         bundle: Bundle,
         table: String = "Localizable"
     ) {
-        self.init(resolver: StringCatalog(
+        self.init(resolver: StringCatalog.cached(
             bundle: bundle,
             table: table
         ))