refactor(build): enable Wasm by default and refactor modules for improved KMP compatibility

Enabled Wasm target across all relevant modules and removed conditional enablement logic. Refactored `core:core-utils` to move JVM-specific code to a new `backend:infrastructure:persistence` module for strict KMP compliance. Updated dependencies, adjusted Gradle configurations, and resolved circular dependencies.

core/core-domain/build.gradle.kts

@@ -20,6 +20,12 @@ kotlin {
     }
   }
 
+  // Wasm support enabled?
+  @OptIn(org.jetbrains.kotlin.gradle.ExperimentalWasmDsl::class)
+  wasmJs {
+      browser()
+  }
+
   sourceSets {
     // Opt-in to experimental Kotlin UUID API across all source sets
     all {