vulkan: initial support for IQ1_S and IQ1_M quantizations (#11528)

* vulkan: initial support for IQ1_S and IQ1_M quantizations

* vulkan: define MMV kernels for IQ1 quantizations

* devops: increase timeout of Vulkan tests again

* vulkan: simplify ifdef for init_iq_shmem

.github/workflows/build.yml

@@ -401,7 +401,7 @@ jobs:
         run: |
           cd build
           # This is using llvmpipe and runs slower than other backends
-          ctest -L main --verbose --timeout 1800
+          ctest -L main --verbose --timeout 2700
 
       - name: Determine tag name
         id: tag