Update on "[ET-VK] Implemement linear_dq8ta_q4gsw"

Title says it all!

Build upon the support for quantized linear introduced in the previous diffs to enable dynamically quantized linear.

Also included in this diff is a cleanup of the glslh files used across quantized linear implementations.

Differential Revision: [D81931060](https://our.internmc.facebook.com/intern/diff/D81931060/)

[ghstack-poisoned]

Author: ssjia

.github/workflows/pull.yml

@@ -933,7 +933,7 @@ jobs:
         PYTHON_EXECUTABLE=python bash backends/vulkan/test/custom_ops/build_and_run.sh add
         ./cmake-out/backends/vulkan/test/custom_ops/q8csw_linear
         ./cmake-out/backends/vulkan/test/custom_ops/q8csw_conv2d
-        ./cmake-out/backends/vulkan/test/custom_ops/q4gsw_conv2d
+        ./cmake-out/backends/vulkan/test/custom_ops/q4gsw_linear
         ./cmake-out/backends/vulkan/test/custom_ops/choose_qparams_per_row
 
         # Run e2e testing for selected operators. More operators will be tested via this