ci : add non-AVX scalar build/test (#2356)

* noavx build and test

* we don't need to remove f16c in windows

.github/workflows/build.yml

@@ -197,6 +197,8 @@ jobs:
     strategy:
       matrix:
         include:
+          - build: 'noavx'
+            defines: '-DLLAMA_BUILD_SERVER=ON -DLLAMA_AVX=OFF -DLLAMA_AVX2=OFF -DLLAMA_FMA=OFF'
           - build: 'avx2'
             defines: '-DLLAMA_BUILD_SERVER=ON'
           - build: 'avx'