update shrinker rules and packaging excludes (#5055)

We wouldn't want to ship unnecessary stuff, would we

 apk size 20.788.307 ->  20.768.841 bytes 🤪

app/build.gradle

@@ -105,6 +105,9 @@ android {
     packagingOptions.resources.excludes += [
             'LICENSE_OFL',
             'LICENSE_UNICODE',
+            'META-INF/androidx/**',
+            'META-INF/NOTICE.md',
+            'DebugProbesKt.bin'
     ]
 
     bundle {

app/proguard-rules.pro

@@ -20,23 +20,6 @@
     public static final ** CREATOR;
 }
 
-# Preserve annotated Javascript interface methods.
--keepclassmembers class * {
-    @android.webkit.JavascriptInterface <methods>;
-}
-
-# The support libraries contains references to newer platform versions.
-# Don't warn about those in case this app is linking against an older
-# platform version. We know about them, and they are safe.
--dontnote androidx.**
--dontwarn androidx.**
-
-# This class is deprecated, but remains for backward compatibility.
--dontwarn android.util.FloatMath
-
-# These classes are duplicated between android.jar and core-lambda-stubs.jar.
--dontnote java.lang.invoke.**
-
 # TUSKY SPECIFIC OPTIONS
 
 # preserve line numbers for crash reporting
@@ -47,6 +30,10 @@
 -keep class org.bouncycastle.jcajce.provider.asymmetric.EC$* { *; }
 -keep class org.bouncycastle.jcajce.provider.asymmetric.ec.KeyPairGeneratorSpi$EC
 
+# Preference fragments can be referenced by name, ensure they remain
+# https://github.com/tuskyapp/Tusky/issues/3161
+-keep class * extends androidx.preference.PreferenceFragmentCompat
+
 # remove all logging from production apk
 -assumenosideeffects class android.util.Log {
     public static *** getStackTraceString(...);
@@ -70,9 +57,16 @@
     static void checkNotNullExpressionValue(java.lang.Object, java.lang.String);
     static void checkReturnedValueIsNotNull(java.lang.Object, java.lang.String);
     static void checkReturnedValueIsNotNull(java.lang.Object, java.lang.String, java.lang.String);
+    static void throwUninitializedProperty(java.lang.String);
     static void throwUninitializedPropertyAccessException(java.lang.String);
 }
 
-# Preference fragments can be referenced by name, ensure they remain
-# https://github.com/tuskyapp/Tusky/issues/3161
--keep class * extends androidx.preference.PreferenceFragmentCompat
+# there is no need for edit mode in production builds, allow it to be pruned
+-assumenosideeffects public class * extends android.view.View {
+  boolean isInEditMode();
+}
+-assumevalues public class * extends android.view.View {
+  boolean isInEditMode() return false;
+}
+
+-checkdiscard class com.keylesspalace.tusky.usecase.DeveloperToolsUseCase