feat: local engine management

[urmauur]

Describe Your Changes

Jan needs a user interface to manage Cortex.cpp engines and their variants. This includes viewing installed engines, managing engine installations, and controlling engine settings through a unified interface.

Fixes Issues

• #4250

Changes made

This pull request introduces a new engine management extension and updates the workflow configurations. The most significant changes include the addition of the engine management extension, updates to the Node.js version in the workflow, and modifications to the existing code to integrate the new extension.

Engine Management Extension:

• Added EngineManagementExtension class to manage engine configurations and operations (core/src/browser/extensions/enginesManagement.ts).
• Defined new types for engine management, including Engines, EngineVariant, DefaultEngineVariant, and EngineReleased (core/src/types/engine/index.ts).
• Exported the engine management extension and related types (core/src/browser/extensions/index.ts, core/src/types/index.ts). [1] [2]
• Created a new package for the engine management extension with necessary configurations (extensions/engine-management-extension/package.json, extensions/engine-management-extension/rolldown.config.mjs). [1] [2]
• Implemented the JSONEngineManagementExtension class to provide functionality for managing engines (extensions/engine-management-extension/src/index.ts).

Workflow Updates:

• Updated Node.js version in the GitHub Actions workflow to use the latest 20.x version (.github/workflows/jan-electron-linter-and-test.yml). [1] [2]

Code Integration:

• Added a new enum value Engine to ExtensionTypeEnum to support the new extension (core/src/browser/extension.ts).
• Updated test configurations and scripts for the new extension (extensions/engine-management-extension/jest.config.js, extensions/engine-management-extension/src/error.ts). [1] [2]
• Renamed and modified test files to align with the new engine management extension (extensions/engine-management-extension/src/node/index.test.ts). [1] [2] [3] [4] [5] [6] [7] [8]

[github-actions]

Barecheck - Code coverage report

Total: 68.61%

Your code coverage diff: 0.05% ▴

Uncovered files and lines

File	Lines
core/src/browser/extension.ts	106, 114-115, 126-127, 145-146, 148-150, 156, 200, 202, 209-213, 215-216
core/src/browser/extensions/enginesManagement.ts	17
web/helpers/atoms/Extension.atom.ts	25
web/hooks/useDownloadState.ts	20-23, 31-32, 34-35, 37, 39-42, 44-45, 48, 50-51, 53-54, 56, 58, 60-63, 69-70, 74, 77, 85, 87-89, 92-95, 99, 101, 103, 106, 108, 110, 112, 115, 117, 119-121, 124-125, 129-130, 133-134, 136, 138, 141, 143-144

[louis-jan]

LGTM

[github-actions]

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