[llvm] Include <chrono> for system_clock and now (#42425)

ports/llvm/add-include-chrono.patch

@@ -0,0 +1,12 @@
+diff --git a/lldb/tools/lldb-dap/ProgressEvent.h b/lldb/tools/lldb-dap/ProgressEvent.h
+index dac2197..72317b8 100644
+--- a/lldb/tools/lldb-dap/ProgressEvent.h
++++ b/lldb/tools/lldb-dap/ProgressEvent.h
+@@ -7,6 +7,7 @@
+ //===----------------------------------------------------------------------===//
+ 
+ #include <atomic>
++#include <chrono>
+ #include <mutex>
+ #include <optional>
+ #include <queue>

ports/llvm/portfile.cmake

@@ -16,6 +16,7 @@ vcpkg_from_github(
         75711.patch # [clang] Add intrin0.h header to mimic intrin0.h used by MSVC STL for clang-cl #75711
         79694.patch # [SEH] Ignore EH pad check for internal intrinsics #79694
         82407.patch # [Clang][Sema] Fix incorrect rejection default construction of union with nontrivial member #82407
+        add-include-chrono.patch # https://github.com/llvm/llvm-project/pull/118059
 )
 
 vcpkg_check_features(

ports/llvm/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "llvm",
   "version": "18.1.6",
-  "port-version": 2,
+  "port-version": 3,
   "description": "The LLVM Compiler Infrastructure.",
   "homepage": "https://llvm.org",
   "license": "Apache-2.0",

versions/baseline.json

@@ -5582,7 +5582,7 @@
     },
     "llvm": {
       "baseline": "18.1.6",
-      "port-version": 2
+      "port-version": 3
     },
     "lmdb": {
       "baseline": "0.9.33",

versions/l-/llvm.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "4037972c311903335c3cca2fbb4683570f309ff9",
+      "version": "18.1.6",
+      "port-version": 3
+    },
     {
       "git-tree": "8f22f1c97f0649913c8c97c6d16d448d76e1e81b",
       "version": "18.1.6",