Adding secondary changelog for deprecations

.chloggen/msg_add-issue-link-deprecation.yml

@@ -0,0 +1,22 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: 'deprecation'
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: featuregates
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: 'Removing Gates being configurable externally to the Registry'
+
+# One or more tracking issues or pull requests related to the change
+issues: [6167]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: |
+  - Deprecate `Gate.ID` in favour of `Registry.RegisterID`
+  - Deprecate `Gate.Enabled` in favour of `Gate.IsEnabled()`
+  - Deprecate `Gate.Description` in favour of `WithRegisterDescription` to be used with `Registry.RegisterID`
+  - Deprecate `Registry.Register` in favour of `Registry.RegisterID`
+  - Deprecate `Registry.MustRegister` in favour of `Registry.MustRegisterID`
+