mediatek: ims: Add README

Change-Id: I4fa304e82564fb1037c66e3845959f174441fa15
Signed-off-by: techyminati <sinha.aryan03@gmail.com>

README.md

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+# Mediatek IMS
+
+* This repository provides a prebuilt IMS (IP Multimedia Subsystem) package for Mediatek devices, rebuilt and adapted to work seamlessly with **AOSP 16** and newer.
+* The aim is to eliminate the dependency on scattered Mediatek ELF blobs and tightly-coupled proprietary components that frequently break with each AOSP release.
+
+## ✨ Features
+
+- ✅ **Unified IMS Package**: Includes all necessary Mediatek IMS framework components in a single APK.
+- ✅ **Commonized IMS**: If your stock blobs are from VNDK S & above vendor, this ims package will work for your seamlessly.
+- ✅ **No External Blobs Required**: Eliminates the need for individual ELF blobs like `libmtk_vt_service.so, vtservice`, etc.
+- ✅ **AOSP 16+ Compatible**: Rebuilt and tested against AOSP 16 sources.
+- ✅ **Plug-and-Play**: Just include the `ims.mk` Makefile — no more hacks or blob chases.
+
+## 📦 How it works?
+
+* Basically the mtk-ims is built on AOSP codebase with all dependencies and framework included in same APK :).
+
+## 🚀 Integration Guide
+
+1. **Clone this repository to your AOSP source tree**,:
+
+```
+git clone https://github.com/techyminati/android_vendor_mediatek_ims vendor/mediatek/ims/
+```
+
+2. **In your device-specific product makefile**, inherit the IMS configuration:
+
+```
+$(call inherit-product, vendor/mediatek/ims/ims.mk)
+```
+
+3. **Build AOSP** as usual. The prebuilt APK, overlays & properties will be included automatically.
+
+## 🛠️ Build Behavior
+
+* The included APK is signed and ready to use.
+* No need to build additional Mediatek-specific services or framework jars.
+* IMS registration, VoLTE, and VoWiFi functionalities (where supported) should work out-of-the-box. [ViLTE may/may not work]
+
+## ❗Disclaimer
+
+* This project is intended for use by developers porting AOSP to Mediatek devices.
+* Tested on AOSP 16. Compatibility with earlier/later versions may require additional patches.
+* IMS/VoLTE features may depend on proper carrier and modem configurations.
+
+## 📄 License
+
+This repository is licensed under Apache License 2.0
+
+## About
+Maintained by [Aryan Sinha](https://github.com/techyminati)