feat: splashscreen (#41)

### Summary

Added splashscreen for the host app fot both platforms

Author: jbroma

package.json

@@ -28,7 +28,7 @@
     "typecheck": "yarn workspaces foreach run typecheck",
     "lint": "yarn workspaces foreach run lint",
     "test": "yarn workspaces foreach run test",
-    "adbreverse": "adb reverse tcp:3000 tcp:3000 &&  adb reverse tcp:9000 tcp:9000 &&  adb reverse tcp:9001 tcp:9001 &&  adb reverse tcp:9002 tcp:9002 &&  adb reverse tcp:9003 tcp:9003"
+    "adbreverse": "adb reverse tcp:3000 tcp:3000 && adb reverse tcp:8081 tcp:8081 && adb reverse tcp:9000 tcp:9000 && adb reverse tcp:9001 tcp:9001 && adb reverse tcp:9002 tcp:9002 && adb reverse tcp:9003 tcp:9003"
   },
   "packageManager": "yarn@3.2.1",
   "devDependencies": {

packages/host/android/app/build.gradle

@@ -161,7 +161,8 @@ dependencies {
     implementation("com.facebook.react:react-android")
 
     implementation("androidx.swiperefreshlayout:swiperefreshlayout:1.0.0")
-
+    implementation("androidx.core:core-splashscreen:1.0.0")
+    
     debugImplementation("com.facebook.flipper:flipper:${FLIPPER_VERSION}")
     debugImplementation("com.facebook.flipper:flipper-network-plugin:${FLIPPER_VERSION}") {
         exclude group:'com.squareup.okhttp3', module:'okhttp'

packages/host/android/app/src/main/AndroidManifest.xml

@@ -8,7 +8,7 @@
       android:icon="@mipmap/ic_launcher"
       android:roundIcon="@mipmap/ic_launcher_round"
       android:allowBackup="false"
-      android:theme="@style/AppTheme">
+      android:theme="@style/BootTheme">
       <activity
         android:name=".MainActivity"
         android:label="@string/app_name"

packages/host/android/app/src/main/java/com/host/MainActivity.java

@@ -5,12 +5,14 @@
 import com.facebook.react.ReactActivityDelegate;
 import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint;
 import com.facebook.react.defaults.DefaultReactActivityDelegate;
+import com.zoontek.rnbootsplash.RNBootSplash;
 
 public class MainActivity extends ReactActivity {
 
   // react-native-screens
   @Override
   protected void onCreate(Bundle savedInstanceState) {
+    RNBootSplash.init(this);
     super.onCreate(null);
   }
   /**

packages/host/android/app/src/main/res/mipmap-hdpi/bootsplash_logo.png

@@ -0,0 +1,3 @@
+<resources>
+    <color name="bootsplash_background">#FFFFFF</color>
+</resources>