mkdir triton package and move triton files (#4420)

### What this PR does / why we need it?
mkdir triton package and move triton files

- vLLM version: v0.11.0
- vLLM main:
vllm-project/vllm@2918c1b

Signed-off-by: shiyuan680 <917935075@qq.com>

Author: shiyuan680

vllm_ascend/ops/triton/__init__.py

@@ -3,11 +3,12 @@
 import vllm.model_executor.layers.fla.ops.layernorm_guard
 import vllm.model_executor.layers.mamba.ops.causal_conv1d
 
-from vllm_ascend.ops.casual_conv1d import (causal_conv1d_fn,
-                                           causal_conv1d_update_npu)
-from vllm_ascend.ops.fla import LayerNormFn, torch_chunk_gated_delta_rule
-from vllm_ascend.ops.sigmoid_gating import \
+from vllm_ascend.ops.triton.fla.fla import (LayerNormFn,
+                                            torch_chunk_gated_delta_rule)
+from vllm_ascend.ops.triton.fla.sigmoid_gating import \
     fused_recurrent_gated_delta_rule_fwd_kernel
+from vllm_ascend.ops.triton.mamba.casual_conv1d import (
+    causal_conv1d_fn, causal_conv1d_update_npu)
 
 vllm.model_executor.layers.mamba.ops.causal_conv1d.causal_conv1d_update = causal_conv1d_update_npu
 vllm.model_executor.layers.mamba.ops.causal_conv1d.causal_conv1d_fn = causal_conv1d_fn