change to cff for citation

CITATION.cff

@@ -0,0 +1,39 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite our paper:"
+
+url: "https://automl.github.io/CARL/"
+repository-code: "https://github.com/automl/CARL"
+
+authors:
+  - family-names: "Benjamins"
+    given-names: "Carolin"
+    affiliation: "Leibniz University Hannover, Germany"
+  - family-names: "Eimer"
+    given-names: "Theresa"
+    affiliation: "Leibniz University Hannover, Germany"
+  - family-names: "Schubert"
+    given-names: "Frederik"
+    affiliation: "Leibniz University Hannover, Germany"
+  - family-names: "Mohan"
+    given-names: "Aditya"
+    affiliation: "Leibniz University Hannover, Germany"
+  - family-names: "Döhler"
+    given-names: "Sebastian"
+    affiliation: "Leibniz University Hannover, Germany"
+  - family-names: "Biedenkapp"
+    given-names: "André"
+    affiliation: "Albert-Ludwigs University Freiburg, Germany"
+  - family-names: "Rosenhahn"
+    given-names: "Bodo"
+    affiliation: "Leibniz University Hannover, Germany"
+  - family-names: "Hutter"
+    given-names: "Frank"
+    affiliation: "Albert-Ludwigs University Freiburg, Germany"
+  - family-names: "Lindauer"
+    given-names: "Marius"
+    affiliation: "Leibniz University Hannover, Germany"
+
+type: "article"
+title: "Contextualize Me - The Case for Context in Reinforcement Learning"
+year: 2023
+journal: "Transactions on Machine Learning Research"