mtmd: qwen3 audio support (qwen3-omni and qwen3-asr) (#19441)

* add qwen3a

* wip

* vision ok

* no more deepstack for audio

* convert ASR model ok

* qwen3 asr working

* Apply suggestions from code review

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

* nits

* Apply suggestions from code review

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

* fix bad merge

* fix multi inheritance

---------

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

gguf-py/gguf/tensor_mapping.py

@@ -1892,6 +1892,14 @@ class TensorNameMap:
             "conformer.subsample_conv_projection.input_proj_linear", # gemma4
         ),
 
+        MODEL_TENSOR.A_ENC_CONV2D: (
+            "audio_tower.conv2d{bid}", # qwen3omni
+        ),
+
+        MODEL_TENSOR.A_ENC_CONV_OUT: (
+            "audio_tower.conv_out", # qwen3omni
+        ),
+
         MODEL_TENSOR.A_PRE_NORM: (),
 
         MODEL_TENSOR.A_POST_NORM: (
@@ -2042,7 +2050,8 @@ class TensorNameMap:
 
         MODEL_TENSOR.A_MMPROJ: (
             "audio.multi_modal_projector.linear_{bid}", # ultravox, meralion
-            "audio_adapter.model.{bid}" # lfm2
+            "audio_adapter.model.{bid}", # lfm2
+            "audio_tower.proj{bid}", # qwen3omni
         ),
 
         MODEL_TENSOR.A_MMPROJ_FC: (