X6833B: Import stock CarrierConfig overlay

* Main carrier config from MtkCarrierConfig asset default_v2.9.3.xml,
  with vendor specific settings appended to the end.

[dodyirawan85 edits]: Originaly from xiaomi ruby adapted for our device, since i can't found anything on stock

Change-Id: I7bcb5f9714720e3b42b5b1e5dc13cfe4233ac874
Signed-off-by: bengris32 <bengris32@protonmail.ch>
Signed-off-by: dodyirawan85 <40514988+dodyirawan85@users.noreply.github.com>

device.mk

@@ -229,6 +229,7 @@ PRODUCT_COPY_FILES += \
 
 # Overlays
 PRODUCT_PACKAGES += \
+    CarrierConfigOverlay \
 	FrameworksResOverlay \
 	SettingsResOverlay \
 	TelephonyOverlay

overlay/CarrierConfigOverlay/Android.bp

@@ -0,0 +1,12 @@
+//
+// Copyright (C) 2023 The LineageOS Project
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+runtime_resource_overlay {
+    name: "CarrierConfigOverlay",
+    sdk_version: "current",
+    product_specific: true,
+    aaptflags: ["--keep-raw-values"]
+}

overlay/CarrierConfigOverlay/AndroidManifest.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2023 The LineageOS Project
+
+     SPDX-License-Identifier: Apache-2.0
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.carrierconfig.overlay">
+
+    <overlay
+        android:isStatic="true"
+        android:priority="200"
+        android:targetPackage="com.android.carrierconfig" />
+</manifest>