add roadmap events for community and Survey

_roadmap/software/2021-12-15-tasks.md

+---
+date: 2021-12-15
+title: Tasks in December 2021
+service: software
+---
+
+## Visualisation of Developer Communities
+HIFIS Community will try to identify local and cross-center research and research software communities.
+It will be done based on data from publications and research software repositories.
+Goal is to increase the visibility of these communities and further support them in the future.