Enable per-app language support (#153)

app/build.gradle.kts

@@ -20,6 +20,7 @@ android {
         versionName = "0.3.12"
         testInstrumentationRunner = "gq.kirmanak.mealient.MealientTestRunner"
         testInstrumentationRunnerArguments += mapOf("clearPackageData" to "true")
+        resourceConfigurations += listOf("en", "es", "ru")
     }
 
     signingConfigs {

app/src/main/AndroidManifest.xml

@@ -16,6 +16,7 @@
 		android:roundIcon="@mipmap/ic_launcher"
 		android:supportsRtl="true"
 		android:theme="@style/Theme.App.Starting"
+		android:localeConfig="@xml/locales_config"
 		tools:ignore="UnusedAttribute">
 		<activity
 			android:name=".ui.activity.MainActivity"

app/src/main/res/xml/locales_config.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<locale-config xmlns:android="http://schemas.android.com/apk/res/android">
+    <locale android:name="en-US" />
+    <locale android:name="es" />
+    <locale android:name="ru" />
+</locale-config>