Update base for Update on "[ET-VK] Implement `native_group_norm"

## Changes

* Add implementation for the group norm operator.

The operator is implemented via a 2 stage implementation. First, a reduction operator is executed to calculate the mean and standard deviation of each channel group. Then, the normalization is applied in an elementwise fashion.

Differential Revision: [D77038778](https://our.internmc.facebook.com/intern/diff/D77038778/)

[ghstack-poisoned]

Author: SS-JIA

backends/vulkan/test/op_tests/cases.py

@@ -758,7 +758,6 @@ def get_permute_inputs():
     ]
     test_suite.dtypes = [
         "at::kFloat",
-        "at::kInt",
     ]
     return test_suite