chore: add cpu_threads settings in cortex extension

[louis-jan]

Describe Your Changes

This PR made a minor change, where the cortex extension should also display the cpt_threads settings (which are optional).

Context:

1. As a user, I don't want Jan to consume all my CPU resources. It should be limited to a few threads in some cases.
2. When I enable Vulkan with AMD GPUs, my CPU still runs at 100%, it's a known issue from engine side. These settings may help addressing that.

Scenarios:

1. In a fresh launch, I don't set anything or invalid setting, it shouldn't send the settings.
   

2. When I set a number, it should send to the engine
   

Changes made

This pull request includes several updates and improvements to the inference-cortex-extension. The changes focus on updating the engine version, adding a new configuration option, and ensuring proper handling of this new configuration in the codebase.

Key Changes:

Version Update:

• Updated the ENGINE_VERSION from 0.1.42 to 0.1.42-hotfix in download.bat, download.sh, and rollup.config.ts to ensure the latest hotfix is used. [1] [2] [3]

Configuration Enhancements:

• Added a new setting cpu_threads to the default_settings.json to allow users to specify the number of CPU threads for inferencing in CPU mode.
• Included cpu_threads in the Settings enum and handled its initialization and usage in index.ts. [1] [2] [3] [4] [5]

UI Improvement:

• Removed an unnecessary condition in the Advanced settings screen to simplify the UI logic.

[github-actions]

Barecheck - Code coverage report

Total: 68.71%

Your code coverage diff: 0.00% ▴

✅ All code changes are covered

[github-actions]

This is the build for this pull request. You can download it from the Artifacts section here: Build URL.

[github-actions]

This is the build for this pull request. You can download it from the Artifacts section here: Build URL.