chg: [license] updated

license.md

@@ -0,0 +1,14 @@
+---
+layout: article
+titles:
+  # @start locale config
+  en      : &EN      Cerebrate Overview of the licenses used 
+  # @end locale config
+key: license 
+---
+
+Cerebrate is released under the [GNU Affero General Public License v3.0](https://github.com/cerebrate-project/cerebrate/blob/main/LICENSE).
+
+# Contributing and copyright
+
+We welcome contributions. All contributors collectively own the Cerebrate project itself, depending on which parts they have contributed to. The contributors also acknowledge the [Developer Certificate of Origin](https://developercertificate.org/) for all their contributions.