chore: bump version to 5.2.0, update HISTORY.rst

CLI Onboarding Simplification release:
- cluster init, hierarchy create (new commands)
- context create --site-id, target create --service-group (enhanced)
- target install with full deploy chain (enhanced)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Atharva

src/workload-orchestration/HISTORY.rst

@@ -2,6 +2,26 @@
 
 Release History
 ===============
+5.2.0
+++++++
+* **CLI Onboarding Simplification** — reduces onboarding from 11 commands to 4:
+* Added ``az workload-orchestration cluster init`` command:
+  * Prepares Arc-connected clusters for WO (cert-manager, trust-manager, extension, custom location)
+  * Idempotent — safely skips components already installed
+  * Supports ``--release-train``, ``--extension-version``, ``--custom-location-name``
+* Added ``az workload-orchestration hierarchy create`` command:
+  * Creates full hierarchy stack (Site + Configuration + ConfigurationReference) in one command
+  * Supports ResourceGroup (shorthand or YAML) and ServiceGroup (up to 3 levels, recursive)
+  * Handles RBAC propagation waits for ServiceGroup hierarchies
+* Enhanced ``az workload-orchestration context create``:
+  * Added ``--site-id`` argument to auto-create site-reference after context creation
+* Enhanced ``az workload-orchestration target create``:
+  * Added ``--service-group`` argument to auto-link target to a Service Group after creation
+* Enhanced ``az workload-orchestration target install``:
+  * Added ``--solution-template-version-id``, ``--solution-template-name``, ``--solution-template-version`` for full deploy chain (review → publish → install)
+  * Added ``--configuration`` to set config values before review (auto-derives config template args)
+  * Existing ``--solution-version-id`` direct install flow unchanged
+
 5.1.1
 ++++++
 * Resolved solution template name to uniqueIdentifier for ``az workload-orchestration target solution-revision-list`` and ``az workload-orchestration target solution-instance-list``

src/workload-orchestration/setup.py

@@ -10,7 +10,7 @@
 
 
 # HISTORY.rst entry.
-VERSION = '5.1.1'
+VERSION = '5.2.0'
 
 # The full list of classifiers is available at
 # https://pypi.python.org/pypi?%3Aaction=list_classifiers