fix: R8

Author: PavloNetrebchuk

app/proguard-rules.pro

@@ -16,9 +16,8 @@
 -keep class * implements com.google.gson.JsonSerializer
 -keep class * implements com.google.gson.JsonDeserializer
 
-# Prevent R8 from leaving Data object members always null
--keepclassmembers,allowobfuscation class * {
-  <init>();
+# Keep all classes with @SerializedName annotations
+-keep class * {
   @com.google.gson.annotations.SerializedName <fields>;
 }
 
@@ -67,3 +66,5 @@
 -dontwarn org.bouncycastle.openssl.PEMKeyPair
 -dontwarn org.bouncycastle.openssl.PEMParser
 -dontwarn org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter
+-dontwarn com.android.billingclient.api.BillingClientStateListener
+-dontwarn com.android.billingclient.api.PurchasesUpdatedListener

app/src/main/res/values-land/dimens.xml

@@ -5,3 +5,5 @@
 -dontshrink
 -dontoptimize
 -dontobfuscate
+
+-dontwarn java.lang.invoke.StringConcatFactory