Added Bangla Translation (#3399)

Added Bangla translations for all resources in the project. The translations were provided by a native Bangla speaker from Bangladesh—myself! This update includes translations for all project elements to support localization for Bangla-speaking users.

V2rayNG/app/src/main/kotlin/com/v2ray/ang/service/V2RayProxyOnlyService.kt

@@ -49,7 +49,7 @@ class V2RayProxyOnlyService : Service(), ServiceControl {
     @RequiresApi(Build.VERSION_CODES.N)
     override fun attachBaseContext(newBase: Context?) {
         val context = newBase?.let {
-            MyContextWrapper.wrap(newBase,  Utils.getLocale(newBase))
+            MyContextWrapper.wrap(newBase,  Utils.getLocale())
         }
         super.attachBaseContext(context)
     }

V2rayNG/app/src/main/kotlin/com/v2ray/ang/service/V2RayVpnService.kt

@@ -327,7 +327,7 @@ class V2RayVpnService : VpnService(), ServiceControl {
     @RequiresApi(Build.VERSION_CODES.N)
     override fun attachBaseContext(newBase: Context?) {
         val context = newBase?.let {
-            MyContextWrapper.wrap(newBase,  Utils.getLocale(newBase))
+            MyContextWrapper.wrap(newBase,  Utils.getLocale())
         }
         super.attachBaseContext(context)
     }

V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/BaseActivity.kt

@@ -34,7 +34,7 @@ abstract class BaseActivity : AppCompatActivity() {
     @RequiresApi(Build.VERSION_CODES.N)
     override fun attachBaseContext(newBase: Context?) {
         val context = newBase?.let {
-            MyContextWrapper.wrap(newBase,  Utils.getLocale(newBase))
+            MyContextWrapper.wrap(newBase,  Utils.getLocale())
         }
         super.attachBaseContext(context)
     }

V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt

@@ -412,7 +412,7 @@ object Utils {
         }
     }
 
-    fun getLocale(context: Context): Locale =
+    fun getLocale(): Locale =
         when (settingsStorage?.decodeString(AppConfig.PREF_LANGUAGE) ?: "auto") {
             "auto" ->  getSysLocale()
             "en" -> Locale("en")
@@ -421,6 +421,7 @@ object Utils {
             "vi" -> Locale("vi")
             "ru" -> Locale("ru")
             "fa" -> Locale("fa")
+            "bn" -> Locale("bn")
             else -> getSysLocale()
         }