Phenotype: Add supported Gemini languages for GMail app

Author: DaVinci9196

play-services-core/src/main/kotlin/org/microg/gms/phenotype/PhenotypeService.kt

@@ -62,7 +62,11 @@ private val CONFIGURATION_OPTIONS = mapOf(
         Flag("45620220", true, 0),
         // Show Audio Call Button
         Flag("45613814", true, 0),
-    )
+    ),
+    "com.google.apps_mobile.common.services.gmail.android#com.google.android.gm" to arrayOf(
+        Flag("45661535", encodeSupportedLanguageList(), 0),
+        Flag("45700179", encodeSupportedLanguageList(), 0)
+    ),
 )
 
 class PhenotypeServiceImpl(val packageName: String?) : IPhenotypeService.Stub() {

play-services-core/src/main/kotlin/org/microg/gms/phenotype/extensions.kt

@@ -0,0 +1,19 @@
+/**
+ * SPDX-FileCopyrightText: 2025 microG Project Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.microg.gms.phenotype
+
+private val supportedLanguages = listOf(
+    "bs", "pt", "ja", "ko", "fr", "it", "de", "zh", "nl",
+    "iw", "he", "tr", "cs", "id", "in", "sv", "da", "no",
+    "nb", "pl", "vi", "th", "fi", "uk", "ar", "el", "ru",
+    "hu", "ro", "ca"
+)
+
+fun encodeSupportedLanguageList(): ByteArray {
+    return supportedLanguages.flatMap { lang ->
+        listOf(0x0A.toByte(), 0x02.toByte()) + lang.toByteArray(Charsets.UTF_8).toList()
+    }.toByteArray()
+}