add contributing file

Signed-off-by: Mirko Mollik <mirkomollik@gmail.com>

CONTRIBUTING.md

@@ -0,0 +1,9 @@
+# Contributing to the project
+
+We welcome all contributions to the project. Please make sure that all your commits are signed off. This indicates that you agree to the [Developer Certificate of Origin](https://developercertificate.org/).
+
+If you have any feature request, feel free to open an issue first or start the discussion in the discord channel.
+
+## Review of PRs
+
+To reduce the complexity of the project, there is no technical mechanism to validate if changes to a wallet or agent entry. At this point we believe that each contributor is responsible for the requested changes.

MAINTAINERS.md

@@ -2,9 +2,10 @@
 
 | Maintainer        | GitHub ID       | Company Affiliation |
 | ----------------- | --------------- | ------------------- |
-| Maaike van Leuken | maaikevanleuken | TNO                 |
 | Samuel Rinnetmäki | samuelmr        | Findynet            |
-| Mirko Mollik      | cre8            | Fraunhofer FIT      |
+| Mirko Mollik      | cre8            | SPRIND              |
+
+Special thanks to Maaike van Leuken for setting up the initial project structure and contributing to the project.
 
 ## 1. What Does Being a Maintainer Entail