feat: Add support for dense FFN tensor names on c++ side

Branch: GraniteFour

Signed-off-by: Gabe Goodhart <ghart@us.ibm.com>

Author: gabe-l-hart

src/llama-arch.cpp

@@ -1670,6 +1670,11 @@ static const std::map<llm_arch, std::map<llm_tensor, const char *>> LLM_TENSOR_N
             { LLM_TENSOR_ATTN_K,         "blk.%d.attn_k" },
             { LLM_TENSOR_ATTN_V,         "blk.%d.attn_v" },
             { LLM_TENSOR_ATTN_OUT,       "blk.%d.attn_output" },
+            // dense FFN
+            { LLM_TENSOR_FFN_NORM,       "blk.%d.ffn_norm" },
+            { LLM_TENSOR_FFN_GATE,       "blk.%d.ffn_gate" },
+            { LLM_TENSOR_FFN_DOWN,       "blk.%d.ffn_down" },
+            { LLM_TENSOR_FFN_UP,         "blk.%d.ffn_up" },
             // moe FFN
             { LLM_TENSOR_FFN_NORM,       "blk.%d.ffn_norm" },
             { LLM_TENSOR_FFN_GATE_INP,   "blk.%d.ffn_gate_inp" },