Add MiniMax-M3 OSCAR KV rotations

MiniMax-M3/README.md

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+# MiniMax-M3 OSCAR KV rotations
+
+Data-free Hadamard, 60 layers, `[128, 128]`. Calibration was measured to add
+nothing on this model -- the shared rotation is already saturated.

MiniMax-M3/k_rotation_hadamard.pt

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+version https://git-lfs.github.com/spec/v1
+oid sha256:f2425507755468f72b4bc0278776ec9504c4bdb35160d0da8fdc865d3789b871
+size 69253

MiniMax-M3/v_rotation_hadamard.pt

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+version https://git-lfs.github.com/spec/v1
+oid sha256:6a4fae7c4cdffff5699e79ecd658fc41dd62ceb150781706597589e56929e3d2
+size 69253