added nextloud tracker

ctf_status.env.example

@@ -0,0 +1,14 @@
+# cp to ctf_status.env and chmod 600
+NC_URL=https://cloud.h4tum.de
+NC_USER=your-nextcloud-login
+# Settings -> Security -> "Create new app password" (NOT your real password)
+NC_PASS=xxxxx-xxxxx-xxxxx-xxxxx-xxxxx
+# path of the folder holding the per-author folders, relative to your Nextcloud root
+NC_ROOT=CTF/challenges
+
+# --- HedgeDoc: the existing note that gets overwritten every run ------------
+# full URL of the note (its permission must be "freely" so an anonymous
+# run may write to it), e.g. https://hedgedoc.cit.tum.de/AbCdEf123
+HEDGEDOC_NOTE=
+# YAML front-matter tags written at the top of the note
+HEDGEDOC_TAGS=Logistics, h4tum CTF 2026