See https://github.com/vector-im/element-web/pull/18370 / https://github.com/matrix-org/matrix-react-sdk/pull/6537 / https://github.com/matrix-org/matrix-js-sdk/pull/1824
This adds a release script based on the JS SDK one used elsewhere for Riot. It disables pushing to NPM, since that's not relevant here. Fixes https://github.com/vector-im/riot-web/issues/13176