Add copy button for mnemonic after creating new wallet (#13)

Part of [laconicd testnet validator enrollment](https://www.notion.so/laconicd-testnet-validator-enrollment-6fc1d3cafcc64fef8c5ed3affa27c675)

Co-authored-by: Shreerang Kale <shreerangkale@gmail.com>
Co-authored-by: IshaVenikar <ishavenikar7@gmail.com>
Reviewed-on: #13

scripts/build-apk.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# Default value for IS_RELEASE
+IS_RELEASE=${IS_RELEASE:-false}
+
+# Install dependencies
+echo "Installing dependencies..."
+yarn
+
+# Create the necessary directory for assets
+mkdir -p android/app/src/main/assets/
+
+# Bundle the React Native application
+yarn react-native bundle \
+  --platform android \
+  --dev false \
+  --entry-file index.js \
+  --bundle-output android/app/src/main/assets/index.android.bundle \
+  --assets-dest android/app/src/main/res
+
+# Navigate to the android directory
+cd android
+
+# Run the Gradle build based on the IS_RELEASE flag
+if [ "$IS_RELEASE" = "true" ]; then
+  echo "Building release version..."
+  ./gradlew assembleRelease
+else
+  echo "Building debug version..."
+  ./gradlew assembleDebug
+fi