reduce samurai memory usage - #1924
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Pull request overview
object_tracking/samurai の推論実行時メモリ使用量を抑えるため、ailia backend 利用時に memory_mode を明示指定してネット初期化する変更です（#1918 の対応パターンに近い形）。
Changes:
ailia.get_memory_mode(...)でmem_modeを作成し、4つのailia.Net初期化（backbone / sam_heads / memory_encoder / memory_attn）にmemory_modeを付与- ONNX Runtime 経路（
args.onnx）は挙動変更なし
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object_tracking/samurai のメモリ使用量が大きかったため #1918 を参考に、memory_mode の指定を追加しました。メモリ使用量の変化はおおよそ以下の通りです(CPU は htop、CUDA は nvidia-smi の表示を読んだもの)。