Bundle the TLS root certificates in the Android app

The mbed TLS path looks for cacert.pem in the runtime resources folder on
Android, the same place as dsp_coef.bin.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011tcyLz63pXjoYEwsFjfg8F

android/app/build.gradle.kts

@@ -28,6 +28,7 @@ val prepareRuntimeResources by tasks.registering(Copy::class) {
     from(File(assets, "wii")) { into("runtime_resources/wii_bootstrap") }
     from(File(assets, "dsp/dsp_coef.bin")) { into("runtime_resources") }
     from(File(assets, "pipeline/initial_pipeline_cache.db")) { into("runtime_resources") }
+    from(File(assets, "certs/cacert.pem")) { into("runtime_resources") }
     into(runtimeResources)
 }