[Fix] Fix Inference Example, Tests, and Requirements (#5688)

* clean requirements

* modify example inference struct

* add test ci scripts

* mark test_infer as submodule

* rm deprecated cls & deps

* import of HAS_FLASH_ATTN

* prune inference tests to be run

* prune triton kernel tests

* increment pytest timeout mins

* revert import path in openmoe

examples/inference/llama/test_ci.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+echo "Skip the test (this test is slow)"
+
+# bash ./run_benchmark.sh