fix(build): add call to setvars.bat for Intel oneAPI in windows-gpu build

Author: Gioee

.github/workflows/main.yml

@@ -396,6 +396,7 @@ jobs:
         if: matrix.name == 'windows-gpu' && steps.cache-llama.outputs.cache-hit != 'true'
         shell: cmd
         run: |
+          call "C:\Program Files (x86)\Intel\oneAPI\setvars.bat" intel64 --force
           call "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
           make build/llama.cpp.stamp ${{ matrix.make }} LLAMA_ARGS="--target common"
           make build/llama.cpp.stamp ${{ matrix.make }} LLAMA_ARGS="--target llama"