feat(create-medusa-app, medusa): check Node.js version before installation. (#8452)

Check before installation with `create-medusa-app` and `medusa new` whether the current node version is >= 20. If not, exit with an error.

packages/core/utils/src/common/get-node-version.ts

@@ -0,0 +1,7 @@
+export function getNodeVersion(): number {
+  const [major] = process.versions.node.split('.').map(Number)
+
+  return major
+}
+
+export const MIN_SUPPORTED_NODE_VERSION = 20

packages/core/utils/src/common/index.ts

@@ -20,6 +20,7 @@ export * from "./get-caller-file-path"
 export * from "./get-config-file"
 export * from "./get-duplicates"
 export * from "./get-iso-string-from-date"
+export * from "./get-node-version"
 export * from "./get-selects-and-relations-from-object-array"
 export * from "./get-set-difference"
 export * from "./graceful-shutdown-server"