add readme

README.md

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+# Katzen.cafe
+
+This is the repository for the NixOS configurations of the Katzen Café (Katzen is german for cats).
+
+**NONE of the services here are to be considered stable for now.**
+
+## Services To-do list
+
+- [x] Keycloak
+- [x] Penpot
+- [x] Forgejo
+- [ ] Vault
+- [ ] Jitsi
+- [ ] Mumble
+- [ ] Nextcloud
+- [ ] Karton
+- [ ] A plain ol' website
+- [ ] Mail sender
+- [ ] Vaultwarden
+- [ ] Calckey
+- [ ] Some matrix server
+- [ ] minecraft
+- [ ] Wiki for service and administration doc
+- [ ] Some external monitoring
+
+## Other things To-do list
+
+- [ ] Ensure proper e2ee for everything
+- [ ] Legal writings stuff
+- [ ] Matrix space
+- [ ] Cleaning up the nix code and securing stuff further
+