[clang] [analyzer] New optin.taint.TaintAlloc checker for catching unbounded memory allocation calls (PR #92420)

[Balazs Benics via cfe-commits]

================
@@ -938,6 +938,53 @@ optin.portability.UnixAPI
 """""""""""""""""""""""""
 Finds implementation-defined behavior in UNIX/Posix functions.
 
+.. _optin-taint-TaintAlloc:
+
+optin.taint.TaintAlloc (C, C++)
----------------
steakhal wrote:

I was thinking of suggesting `TaintedAlloc` (same in past tense), as it sounds better to me. I have no strong opinion on this though.

https://github.com/llvm/llvm-project/pull/92420