build: add ABI-specific version code configuration

Author: prathameshkhade

android/app/build.gradle

@@ -37,6 +37,13 @@ android {
         targetSdk = flutter.targetSdkVersion
         versionCode = flutter.versionCode
         versionName = flutter.versionName
+
+        // abiFilters cannot be present when splits abi filters are set
+        ndk {
+            if(!splits.abi.enable) {
+                abiFilters 'arm64-v8a', 'armeabi-v7a'
+            }
+        }
     }
 
     dependencies {
@@ -70,4 +77,16 @@ android {
 
 flutter {
     source = "../.."
+}
+
+// ABI-specific version code configuration
+ext.abiCodes = ["x86_64": 1, "armeabi-v7a": 2, "arm64-v8a": 3]
+import com.android.build.OutputFile
+android.applicationVariants.all { variant ->
+    variant.outputs.each { output ->
+        def abiVersionCode = project.ext.abiCodes.get(output.getFilter(OutputFile.ABI))
+        if (abiVersionCode != null) {
+            output.versionCodeOverride = variant.versionCode + abiVersionCode
+        }
+    }
 }