model-conversion : add option to print tensor values

[danbev]

This commit updates the tensor-info.py script to support the option to print the first N values of a tensor when displaying its information.

The motivation for this is that it can be useful to inspect some actual values in addition to the shapes of the tensors.

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Example usage:

./scripts/utils/tensor-info.py -m ~/work/models/moonshotai/Kimi-Linear model.layers.0.self_attn.A_log -n 32

Tensor: model.layers.0.self_attn.A_log
File:   model-00001-of-00020.safetensors
Shape:  [1, 1, 32, 1]
Dtype:  torch.float32
Values: [1.103968620300293, -0.20674507319927216, 0.06409236788749695, 2.277034282684326, 3.3999674320220947, 4.209522724151611, 1.915040135383606, 3.1779892444610596, 3.0966317653656006, 1.5971810817718506, 4.7506303787231445, -0.4733889102935791, 2.5522594451904297, 5.304281234741211, -0.31161242723464966, 2.7692441940307617, 2.7018637657165527, 2.3136250972747803, 1.659307837486267, 3.121227741241455, -1.488243579864502, 2.63500714302063, -0.8697880506515503, 3.5412185192108154, 2.9536848068237305, 2.9326748847961426, 2.8871192932128906, 2.265052080154419, 3.379794120788574, 2.962221622467041, 3.7428195476531982, 3.0271267890930176]