[NPU] Add initial support for minicpm-llama-v2.5

[sgwhat]

Description

MiniCPMV is divided into 3 components: LLM, VPM, and Resampler. We run the LLM ccomponet on NPU and others on CPU.

1. Why the change?

Add npu optimization for minicpm-llama-v-2.5.

2. User API changes

-------------------- Input --------------------
http://farm6.staticflickr.com/5268/5602445367_3504763978_z.jpg
-------------------- Prompt --------------------
What is in the image?
-------------------- Output --------------------
The image depicts a young girl holding a small white teddy bear. She is wearing a pink and white striped dress. The background shows a stone wall with red flowers in the foreground

3. Summary of the change

• npu multi-processing optimization
• npu example and readme
• vpm attention optimization (another pr)

4. How to test?

We test this model with images input.

• MTL
• LNL

[sgwhat]

Impl in npu_model.py will be replace by #11966 then.