chore: Add eslint flat config (#4651)

* add flat config

* changelog

* try resolution

* update yarn.lock

* resolve jackspeak

* Changes from lint:fix

* Revert "resolve jackspeak"

This reverts commit b16973e.

* Revert "update yarn.lock"

This reverts commit 9ca4b84.

* Revert "try resolution"

This reverts commit 32c896c.

* yarn lock

* Revert "yarn lock"

This reverts commit ef1f6c8.

* undo

* try yarn higher version

* yarn 1.22.22

* update lock

* fix

---------

Co-authored-by: cloud-sdk-js <cloud-sdk-js@github.com>
Co-authored-by: Marika Marszalkowski <marika.marszalkowski@sap.com>

.changeset/wicked-radios-sip.md

@@ -0,0 +1,5 @@
+---
+"@sap-cloud-sdk/eslint-config": minor
+---
+
+[Improvement] Add a config based on the new Eslint flat config format. The new config can be used inside a `eslint.config.js` file.