Install libclang for Windows arm config

There is only static libs provisioned on VM and it seems that we can't
build shiboken6 with those.

Change-Id: I04fd633405cda0c11efab5d1f2cbd532a0f2b3c9
Reviewed-by: Cristian Maureira-Fredes <[email protected]>

Author: faltsi

coin/fetch_libclang_arm64.ps1

@@ -0,0 +1,8 @@
+# Copyright (C) 2024 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+# Download the file
+
+wget https://download.qt.io/development_releases/prebuilt/libclang/libclang-release_19.1.0-based-windows-vs2022_arm64.7z -o libclang.7z
+# Unzip the contents to /home/qt
+7z x libclang.7z -o/utils
+Remove-Item libclang.7z

coin/instructions/common_environment.yaml

@@ -236,6 +236,21 @@ instructions:
               equals_value: AARCH64
       userMessageOnFailure: >
           Failed to download libclang from Qt servers
+    - type: ExecuteCommand
+      command: ["powershell", "-ExecutionPolicy", "Bypass", "-File", "coin\\fetch_libclang_arm64.ps1"]
+      maxTimeInSeconds: 14400
+      maxTimeBetweenOutput: 1200
+      enable_if:
+          condition: and
+          conditions:
+            - condition: property
+              property: host.os
+              equals_value: Windows
+            - condition: property
+              property: host.arch
+              equals_value: AARCH64
+      userMessageOnFailure: >
+          Failed to download libclang from Qt servers
     - type: EnvironmentVariable
       variableName: LLVM_INSTALL_DIR
       variableValue: "/home/qt/libclang"
@@ -248,6 +263,18 @@ instructions:
           - condition: property
             property: host.os
             equals_value: Linux
+    - type: EnvironmentVariable
+      variableName: LLVM_INSTALL_DIR
+      variableValue: "\\utils\\libclang"
+      enable_if:
+        condition: and
+        conditions:
+          - condition: property
+            property: target.arch
+            equals_value: AARCH64
+          - condition: property
+            property: host.os
+            equals_value: Windows
     - type: EnvironmentVariable
       variableName: interpreter
       variableValue: "python3.11"