Added missing AUTHORS.md file

Signed-off-by: Andreas Maier <maiera@de.ibm.com>

AUTHORS.md

@@ -0,0 +1,20 @@
+# Authors of this project
+
+Sorted list of authors derived from git commit history:
+```
+Andreas Maier <andreas.r.maier@gmx.de>
+Andreas Maier <andy-maier@users.noreply.github.com>
+Andreas Maier <maiera@de.ibm.com>
+Andreas Maier <maiera@oc0652046780.ibm.com>
+Anil Kumar Dakarapu <anil.kumar.dakarapu@ibm.com>
+Edwin Günthner <53468311+EdGue42@users.noreply.github.com>
+Edwin Günthner <edwin.guenthner@de.ibm.com>
+Juergen Leopold <leopoldj@de.ibm.com>
+Marc Hartmayer <mhartmay@linux.ibm.com>
+Saiprasanna Boyina <Saiprasanna.Boyina@ibm.com>
+Samirgorai <samirgorai17@gmail.com>
+dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
+leopoldjuergen <leopoldj@de.ibm.com>
+simon-spinner <simon.spinner@outlook.de>
+simon-spinner <sspinner@de.ibm.com>
+```