desktop: wire in API into desktop client

desktop/src/jvmMain/kotlin/Api.kt

@@ -0,0 +1,34 @@
+import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
+import dev.msfjarvis.claw.api.LobstersApi
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
+import okhttp3.MediaType
+import okhttp3.OkHttpClient
+import retrofit2.Retrofit
+import retrofit2.create
+
+@OptIn(ExperimentalSerializationApi::class)
+class Api {
+  private fun getOkHttpClient(): OkHttpClient {
+    return OkHttpClient.Builder()
+      .addNetworkInterceptor { chain ->
+        val request = chain.request()
+        println("LobstersApi: ${request.method()}: ${request.url()}")
+        chain.proceed(request)
+      }
+      .build()
+  }
+
+  private fun getRetrofit(
+    okHttpClient: OkHttpClient,
+  ): Retrofit {
+    val contentType = MediaType.get("application/json")
+    return Retrofit.Builder()
+      .client(okHttpClient)
+      .baseUrl(LobstersApi.BASE_URL)
+      .addConverterFactory(Json.asConverterFactory(contentType))
+      .build()
+  }
+
+  val api: LobstersApi = getRetrofit(getOkHttpClient()).create()
+}