docs: Add readme

README.md

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+<p align="center">
+  <picture>
+    <source
+      width="256px"
+      media="(prefers-color-scheme: dark)"
+      srcset="assets/revanced-headline/revanced-headline-vertical-dark.svg"
+    >
+    <img 
+      width="256px"
+      src="assets/revanced-headline/revanced-headline-vertical-light.svg"
+    >
+  </picture>
+  <br>
+  <a href="https://revanced.app/">
+     <picture>
+         <source height="24px" media="(prefers-color-scheme: dark)" srcset="assets/revanced-logo/revanced-logo.svg" />
+         <img height="24px" src="assets/revanced-logo/revanced-logo.svg" />
+     </picture>
+   </a>&nbsp;&nbsp;&nbsp;
+   <a href="https://github.com/ReVanced">
+       <picture>
+           <source height="24px" media="(prefers-color-scheme: dark)" srcset="https://i.ibb.co/dMMmCrW/Git-Hub-Mark.png" />
+           <img height="24px" src="https://i.ibb.co/9wV3HGF/Git-Hub-Mark-Light.png" />
+       </picture>
+   </a>&nbsp;&nbsp;&nbsp;
+   <a href="http://revanced.app/discord">
+       <picture>
+           <source height="24px" media="(prefers-color-scheme: dark)" srcset="https://user-images.githubusercontent.com/13122796/178032563-d4e084b7-244e-4358-af50-26bde6dd4996.png" />
+           <img height="24px" src="https://user-images.githubusercontent.com/13122796/178032563-d4e084b7-244e-4358-af50-26bde6dd4996.png" />
+       </picture>
+   </a>&nbsp;&nbsp;&nbsp;
+   <a href="https://reddit.com/r/revancedapp">
+       <picture>
+           <source height="24px" media="(prefers-color-scheme: dark)" srcset="https://user-images.githubusercontent.com/13122796/178032351-9d9d5619-8ef7-470a-9eec-2744ece54553.png" />
+           <img height="24px" src="https://user-images.githubusercontent.com/13122796/178032351-9d9d5619-8ef7-470a-9eec-2744ece54553.png" />
+       </picture>
+   </a>&nbsp;&nbsp;&nbsp;
+   <a href="https://t.me/app_revanced">
+      <picture>
+         <source height="24px" media="(prefers-color-scheme: dark)" srcset="https://user-images.githubusercontent.com/13122796/178032213-faf25ab8-0bc3-4a94-a730-b524c96df124.png" />
+         <img height="24px" src="https://user-images.githubusercontent.com/13122796/178032213-faf25ab8-0bc3-4a94-a730-b524c96df124.png" />
+      </picture>
+   </a>&nbsp;&nbsp;&nbsp;
+   <a href="https://x.com/revancedapp">
+      <picture>
+         <source media="(prefers-color-scheme: dark)" srcset="https://user-images.githubusercontent.com/93124920/270180600-7c1b38bf-889b-4d68-bd5e-b9d86f91421a.png">
+         <img height="24px" src="https://user-images.githubusercontent.com/93124920/270108715-d80743fa-b330-4809-b1e6-79fbdc60d09c.png" />
+      </picture>
+   </a>&nbsp;&nbsp;&nbsp;
+   <a href="https://www.youtube.com/@ReVanced">
+      <picture>
+         <source height="24px" media="(prefers-color-scheme: dark)" srcset="https://user-images.githubusercontent.com/13122796/178032714-c51c7492-0666-44ac-99c2-f003a695ab50.png" />
+         <img height="24px" src="https://user-images.githubusercontent.com/13122796/178032714-c51c7492-0666-44ac-99c2-f003a695ab50.png" />
+     </picture>
+   </a>
+   <br>
+   <br>
+   Continuing the legacy of Vanced
+</p>
+
+# 📚 ReVanced Library
+
+![GitHub Workflow Status (with event)](https://img.shields.io/github/actions/workflow/status/ReVanced/revanced-library/release.yml)
+![GPLv3 License](https://img.shields.io/badge/License-GPL%20v3-yellow.svg)
+
+Library containing common utilities for ReVanced.
+
+## ❓ About
+
+ReVanced Library powers projects such as [ReVanced Manager](https://github.com/ReVanced/revanced-manager),
+[ReVanced CLI](https://github.com/ReVanced/revanced-cli) with common utilities and functionalities
+by providing shared code.
+
+## 💪 Features
+
+Some of the features the ReVanced Library provides are:
+
+- 📝 **Signing APKs**: Read and write keystores, and sign APK files
+- 🧩 **Common utility functions**: Various APIs for ReVanced patches such as JSON serialization,
+  reading and setting patch options, calculating the most common compatible version for a set of patches and more
+- 💾 **Install and uninstall APKs**: Install and uninstall APK files using ADB locally,
+  using the Android package manager, or by mounting using root permissions
+- 📦 **Repackage patched files to an APK**: Apply patched files from
+  [ReVanced Patcher](https://github.com/revanced/revanced-patcher) to an APK file, and align & sign the APK file automatically
+
+## 🚀 How to get started
+
+To use ReVanced Library in your project, follow these steps:
+
+1. [Add the repository](https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-gradle-registry#using-a-published-package)
+   to your project
+2. Add the dependency to your project:
+
+   ```kt
+    dependencies {
+        implementation("app.revanced:revanced-library:{$version}")
+    }
+   ```
+
+## 📚 Everything else
+
+### 📙 Contributing
+
+Thank you for considering contributing to ReVanced Library.
+You can find the contribution guidelines [here](CONTRIBUTING.md).
+
+### 🛠️ Building
+
+To build ReVanced Library,
+you can follow the [ReVanced documentation](https://github.com/ReVanced/revanced-documentation).
+
+## 📜 Licence
+
+ReVanced Library is licensed under the GPLv3 license. Please see the [licence file](LICENSE) for more information.
+[tl;dr](https://www.tldrlegal.com/license/gnu-general-public-license-v3-gpl-3) you may copy, distribute and modify ReVanced Library as long as you track changes/dates in source files.
+Any modifications to ReVanced Library must also be made available under the GPL,
+along with build & install instructions.