Add CLA bot

Author: pomianowski

.clabot

@@ -0,0 +1,5 @@
+{
+  "contributors": [
+    "pomianowski"
+  ]
+}

CONTRIBUTING.md

@@ -0,0 +1,13 @@
+# Contribution Guidelines
+
+and as always, todo
+
+## Prerequisites
+
+## Code
+
+### Code style
+
+## Other general information
+
+## Acknowledgement

README.md

@@ -6,8 +6,7 @@
 [Created with ❤ in Poland by lepo.co](https://dev.lepo.co/)  
 A simple way to make your application written in WPF keep up with modern design trends. Library changes the base elements like `Page`, `ToggleButton` or `List`, and also includes additional controls like `Navigation`, `NumberBox`, `Dialog` or `Snackbar`.
 
-[![GitHub license](https://img.shields.io/github/license/lepoco/wpfui)](https://github.com/lepoco/wpfui/blob/master/LICENSE) [![Nuget](https://img.shields.io/nuget/v/WPF-UI)](https://www.nuget.org/packages/WPF-UI/) [![Nuget](https://img.shields.io/nuget/dt/WPF-UI?label=nuget-downloads)](https://www.nuget.org/packages/WPF-UI/) [![VS 2022 Downloads](https://img.shields.io/visual-studio-marketplace/i/lepo.WPF-UI?label=vs-2022-downloads)](https://marketplace.visualstudio.com/items?itemName=lepo.WPF-UI) [![Github Downloads](https://img.shields.io/github/downloads/lepoco/wpfui/total.svg?label=github-downloads)](https://github.com/lepoco/wpfui/releases)
-[![Sponsors](https://img.shields.io/github/sponsors/lepoco)](https://github.com/sponsors/lepoco) [![Discord](https://img.shields.io/discord/1071051348348514375?label=discord)](https://discord.gg/AR9ywDUwGq)
+[![Discord](https://img.shields.io/discord/1071051348348514375?label=discord)](https://discord.gg/AR9ywDUwGq) [![GitHub license](https://img.shields.io/github/license/lepoco/wpfui)](https://github.com/lepoco/wpfui/blob/master/LICENSE) [![Nuget](https://img.shields.io/nuget/v/WPF-UI)](https://www.nuget.org/packages/WPF-UI/) [![Nuget](https://img.shields.io/nuget/dt/WPF-UI?label=nuget)](https://www.nuget.org/packages/WPF-UI/) [![VS 2022 Downloads](https://img.shields.io/visual-studio-marketplace/i/lepo.WPF-UI?label=vs-2022)](https://marketplace.visualstudio.com/items?itemName=lepo.WPF-UI) [![Sponsors](https://img.shields.io/github/sponsors/lepoco)](https://github.com/sponsors/lepoco)
 
 ![ua](https://user-images.githubusercontent.com/13592821/184498735-d296feb8-0f9b-45df-bc0d-b7f0b6f580ed.png)