Moved dynamic constraints in a dedicated folder

bookshop/test/dynamic-constraints/readme.md

@@ -0,0 +1,26 @@
+## Experimental Dynamic Constraints
+
+This example demonstrates how to use dynamic constraints in a CAP application. It includes a service definition and a test setup to validate the constraints.
+
+
+### Prerequisites
+
+You've setup the [_cap/samples_](https://github.com/sap-samples/cloud-cap-samples) like so:
+
+```sh
+git clone -q https://github.com/sap-samples/cloud-cap-samples cap/samples
+cd cap/samples
+npm install
+```
+
+### Testing
+
+Test like that in `cds.repl` from _cap/samples_ root:
+
+```sh
+cds repl --run bookshop/test/dynamic-constraints
+````
+
+```javascript
+await AdminService.create ('Books', { title:'   ', author_ID:150 })
+```