Add support for providerSettings in vectorize taskType

[Sirsho1997]

Added

• IVectorize: width, height, positivePrompt, providerSettings (optional)
• IVectorize.inputs optional (prompt-only vectorize e.g. recraft:v4@vector)
• VectorizeProviderSettings type alias (IRecraftProviderSettings) in types
• _processVectorizeInputs and _buildVectorizeRequest in base (vectorize follows video/3D flow)
• Single _addProviderSettings(request_object, payload) for image, image background removal, image upscale, vectorize, video, audio, text (replaces _addImageProviderSettings, _addAudioProviderSettings, _addTextProviderSettings)

Changed

• Vectorize: inputs resolved via process_image when present; optional and added with _addOptionalField
• _addProviderSettings payload type: Union[IImageInference, IImageBackgroundRemoval, IImageUpscale, IVectorize, IVideoInference, IAudioInference, ITextInference]

[Copilot]

Pull request overview

This pull request adds support for providerSettings in the vectorize task type and refactors provider settings handling across multiple task types. The implementation consolidates duplicate provider settings methods into a single unified method and modernizes the vectorize implementation to follow the pattern used by 3D inference.

Changes:

• Added VectorizeProviderSettings type alias and new optional fields to IVectorize (width, height, positivePrompt, providerSettings)
• Refactored _vectorize method to use process_image() pattern instead of uploadImage(), with new helper methods for cleaner code structure
• Consolidated task-specific provider settings methods (_addImageProviderSettings, _addTextProviderSettings, _addAudioProviderSettings) into a single _addProviderSettings() method that accepts a Union of payload types

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
runware/types.py	Added VectorizeProviderSettings type alias; added optional fields (width, height, positivePrompt, providerSettings) to IVectorize dataclass; cleaned up formatting
runware/base.py	Refactored _vectorize with helper methods (_processVectorizeInputs, _buildVectorizeRequest); consolidated provider settings methods into unified _addProviderSettings(); updated all call sites to use new method

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