feat: extract cms from mp/cms — initial libreshop/cms

Source moved verbatim from mp/cms/ on 2026-04-29; mp was the first
concrete adapter consuming the libreshop toolkit. Builds and publishes
git.librete.ch/libreshop/cms on every main / v* push via the standard
.gitea/workflows/build.yml shared across libreshop components.

config/logger.ts

@@ -0,0 +1,16 @@
+import { winston } from "@strapi/logger";
+
+export default {
+	transports: [
+		new winston.transports.Console({
+			format: winston.format.combine(
+				winston.format.printf(({ timestamp, level, message, ...rest }) => {
+					let restString = JSON.stringify(rest, undefined, 2);
+					restString = restString === "{}" ? "" : restString;
+
+					return `${timestamp}Z ${level}: ${message} ${restString}`;
+				})
+			)
+		})
+	]
+};