Added breaking change announcement for az ssh arc commands (Azure#8571)

Author: StevenBucher98

src/ssh/azext_ssh/_breaking_change.py

@@ -0,0 +1,21 @@
+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+from azure.cli.core.breaking_change import register_other_breaking_change
+
+register_other_breaking_change(
+    'ssh arc',
+    'On May 21st 2025, any ssh arc commands on versions <2.0.4 will no longer work. '
+    'Please upgrade to az ssh version >=2.0.4',
+    target_version='2.0.4')
+register_other_breaking_change(
+    'ssh config',
+    'On May 21st 2025, any ssh commands connecting to ARC machines on versions <2.0.4 will no longer work. '
+    'Please upgrade to az ssh version >=2.0.4',
+    target_version='2.0.4')
+register_other_breaking_change(
+    'ssh vm',
+    'On May 21st 2025, any ssh commands connecting to ARC machines on versions <2.0.4 will no longer work. '
+    'Please upgrade to az ssh version >=2.0.4',
+    target_version='2.0.4')