feat: Rebrand app with new logo and updated assets

- Updated app logo to "Logo.png" and "LogoRound.png" across all platforms (Android and iOS).
- Replaced existing logo assets in `README.md`, app drawer, and launcher icons.
- Configured adaptive icons for Android with background color "#AADDBF00" and foreground icon "LogoRound.png".
- Updated iOS app icons with new logo assets for all required sizes.
- Modified `pubspec.yaml` to reflect the new logo and adaptive icon settings.
- Updated license to GPLv3.0.

Author: prathameshkhade

README.md

@@ -1,6 +1,6 @@
 # 🛠️ **sysAdmin** - Mobile GUI for Linux System Administrators 🖥️
 
-<img src="assets/logo.png" alt="SysAdmin Logo">
+<img src="assets/LogoRound.png" alt="SysAdmin Logo" style="min-width: 10%; max-width: 25%" title="SysAdmin Logo">
 
 Welcome to **sysAdmin** – a powerful mobile application built with Flutter and
 Dart, designed to provide a graphical user interface for Linux system
@@ -197,7 +197,7 @@ We are actively working on the following features:
 
 ## 📄 License
 
-This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
+This project is licensed under the GPLv3.0 License - see the [LICENSE](LICENSE) file
 for details.
 
 ## 🛡️ Security
@@ -208,7 +208,7 @@ repository maintainer. All security vulnerabilities will be promptly addressed.
 ## 📞 Contact
 
 Feel free to reach out via GitHub issues or by emailing us at
-[[email protected]](mailto:your-[email protected]).
+[[email protected]](mailto:[email protected]).
 
 ---
 

android/app/src/main/res/drawable-hdpi/ic_launcher_foreground.png

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+  <background android:drawable="@color/ic_launcher_background"/>
+  <foreground>
+      <inset
+          android:drawable="@drawable/ic_launcher_foreground"
+          android:inset="16%" />
+  </foreground>
+</adaptive-icon>