feat(docs): add developer guide

docs/Developer Guide/Developer Guide/Building and deployment/Releasing a version.md

@@ -0,0 +1,22 @@
+# Releasing a version
+On NixOS:
+
+```plain
+nix-shell -p dpkg fakeroot jq nodejs_20
+```
+
+Then simply run from project root:
+
+```plain
+./bin/release.sh 1.2.3
+```
+
+where `1.2.3` is the desired release version.
+
+If a version ends with `-beta`, it will automatically be marked as pre-release in GitHub.
+
+This will automatically generate a release in GitHub if everything goes according to plan.
+
+Note that the Windows installer is not automatically uploaded yet, it has to be taken from the [main workflow of the CI from the `develop` branch](CI/Main.md).
+
+Make sure to check test the artifacts of the release.