[Remote rendering 5.3] Remote mode deployment and pvserver packaging

### 📝 Description of the feature

Decide and implement how remote-mode VISOR is delivered so pvserver is available where it runs, rather than assumed present in the environment. This will be informed by the spike in 5.1

[Possible shape, if bundling pvserver into VISOR's Python package is not a good option: container built on ParaView base with VISOR installed onto ParaView's Python environment]

### Acceptance Criteria

Remote-mode VISOR runs with pvserver available in its deployment, version-matched to the ParaView/VTK stack.
The delivery mechanism is decided and implemented.

### 💵 Business Value

_No response_

### 🔗 Useful links and references

_No response_

首先閱讀 5.1 中引用的 spike，並比較所提出的基於 Python-package 和 ParaView-base 的容器交付方案。確認 remote-mode 的 VISOR 部署在哪裡以及 pvserver 如何提供，然後驗證它在那裡可用，且版本與 ParaView/VTK 堆疊相符。

由索引模型根據 Issue 內容生成。