Adds Hannah Hagen to the team page.

Author: hagenjp

_data/team.yml

@@ -88,3 +88,12 @@
       - bundesliga
       - snowboarding
       - german
+
+- name: Hannah Hagen
+  title: Research Software Engineer
+  pic: HannahHagen.png
+  github: hagenjp
+  interests:
+      - outdoor adventuring
+      - gardening
+      - wellness