[clang-tools-extra][Docs][NFC] Add back lost release notes (#150409)

When release notes were cleared on ``main``, clang-tools-extra project
already cleared release notes and commit
3d8db8e flushed them. This patch
restores lost release notes.

Author: vbvictor

clang-tools-extra/docs/ReleaseNotes.rst

@@ -85,6 +85,11 @@ Improvements to clang-doc
 Improvements to clang-query
 ---------------------------
 
+- Matcher queries interpreted by clang-query are now support trailing comma (,)
+  in matcher arguments. Note that C++ still doesn't allow this in function
+  arguments. So when porting a query to C++, remove all instances of trailing
+  comma (otherwise C++ compiler will just complain about "expected expression").
+
 Improvements to clang-tidy
 --------------------------
 
@@ -97,6 +102,22 @@ New check aliases
 Changes in existing checks
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
+- Improved :doc:`bugprone-infinite-loop
+  <clang-tidy/checks/bugprone/infinite-loop>` check by adding detection for
+  variables introduced by structured bindings.
+
+- Improved :doc:`bugprone-unhandled-self-assignment
+  <clang-tidy/checks/bugprone/unhandled-self-assignment>` check by adding
+  an additional matcher that generalizes the copy-and-swap idiom pattern
+  detection.
+
+- Improved :doc:`misc-header-include-cycle
+  <clang-tidy/checks/misc/header-include-cycle>` check performance.
+
+- Improved :doc:`portability-template-virtual-member-function
+  <clang-tidy/checks/portability/template-virtual-member-function>` check to
+  avoid false positives on pure virtual member functions.
+
 Removed checks
 ^^^^^^^^^^^^^^