feat(trtllm): add new finish reasons

Add new finish reasons introduced in TensorRT-LLM v0.16.0.

Author: leejuyuu

backends/trtllm/csrc/ffi.hpp

@@ -42,6 +42,10 @@ namespace huggingface::tgi::backends::trtllm {
                 return finish_reason_t::kEND_ID;
             case tle::FinishReason::kLENGTH:
                 return finish_reason_t::kLENGTH;
+            case tle::FinishReason::kTIMED_OUT:
+                return finish_reason_t::kTIMED_OUT;
+            case tle::FinishReason::kCANCELLED:
+                return finish_reason_t::kCANCELLED;
             default:
                 std::unreachable();
         }

backends/trtllm/src/lib.rs

@@ -24,6 +24,14 @@ mod ffi {
         /// The request finished because the maximum number of tokens was reached.
         #[cxx_name = "kLENGTH"]
         MaxLength = 3u8,
+
+        #[cxx_name = "kTIMED_OUT"]
+        /// The request finished because it got timed out (via the mAllotedTime parameter)
+        TimedOut = 4u8,
+
+        #[cxx_name = "kCANCELLED"]
+        /// The request was cancelled by calling cancelRequest.
+        Cancelled = 5u8,
     }
 
     /// Struct used as shared type between rust and C++ to represent the result