Added stub for 0.18 release cycle

Author: oleksandr-pavlyk

CHANGELOG.md

@@ -4,6 +4,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.18.0] - XXX. XX, 2024
+
+### Added
+
+### Change
+
+### Fixed
+
 ## [0.17.0] - May. XX, 2024
 
 This release features updated documentation web-page https://intelpython.github.io/dpctl/latest/index.html, adds cumulative reductions,