chore: add README and LICENSE

roles/nextcloud-apps/README.md

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+# `finallycoffee.nextcloud.nextcloud-apps` ansible role
+
+This role can be used to install/update, remove, enable and disable
+nextcloud apps.
+
+## Examples
+
+```yaml
+nextcloud_apps:
+  # Install cospend app
+  - name: cospend
+    state: present
+  # Make sure mail app is installed, but not enabled
+  - name: mail
+    state: present
+    enabled: no
+  # Uninstall photos app
+  - name: photos
+    state: absent
+  # Make sure federation app is always up-to-date
+  - name: federation
+    state: latest
+```

roles/nextcloud/README.md

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+# `finallycoffee.nextcloud.nextcloud` ansible role
+
+This role can be used to deploy nextcloud in a docker container,
+regardless of wether the `apache` or `fpm` docker image is used.
+
+It provides various common (optimization) configuration options
+and creates a user on the host which is mapped into the container,
+so the host file permissions remain comprehensible.