[llvm] Add llvm-project archive issues for Chromium bug tracker (PR #132030)

[Kristof Beyls via llvm-commits]

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@@ -29,8 +37,11 @@ In 2021, the security group received 13 issue reports that were made publicly
 visible before 31st of December 2021.  The security group judged 2 of these
 reports to be security issues:
 
-* https://bugs.chromium.org/p/llvm/issues/detail?id=5
-* https://bugs.chromium.org/p/llvm/issues/detail?id=11
+* https://issuetracker.google.com/issues/42410043 archive:
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kbeyls wrote:

I think it might be good to keep the original bugs.chromium.org urls, so that mapping from original chromium id remains possible. But this is only a weakly held opinion on my part...

https://github.com/llvm/llvm-project/pull/132030