ci: Install mingw-w64-wintab-sdk

Required for Qt 5.15 (tablet events).

Author: dg0yt

ci/setup-msys2.yml

@@ -94,6 +94,19 @@ steps:
   condition: not(variables['openorienteering.superbuild.msysBuildId'])
   displayName: 'Install MSYS2 MinGW packages for OpenOrienteering Superbuild'
 
+- script: |
+    set PATH=%SUPERBUILD_INSTALL_DIR_NATIVE%\usr\bin;%WINDIR%\system32;%WINDIR%;%WINDIR%\system32\wbem
+    pacman --noconfirm -S --needed ^
+      mingw-w64-%MSYSTEM_CARCH%-wintab-sdk ^
+      2>error.log
+    if errorlevel 1 (
+      type error.log 1>&2
+      exit /b 1
+    ) else (
+      type error.log
+    )
+  displayName: 'Install mingw-w64-wintab-sdk'
+
 - script: |
     set PATH=%SUPERBUILD_INSTALL_DIR_NATIVE%\usr\bin;%WINDIR%\system32;%WINDIR%;%WINDIR%\system32\wbem
     pacman --noconfirm -Scc