feat(ipx): improve ipx provider typing and test coverage

[xsynaptic]

Extends the IPX provider with additional operations supported by ipx/sharp. This adds typing for resize/crop (and the associated position/post and fit params) and some effects: rotate, flip/flop, blur/sharpen, grayscape, background/b.

Example URLs:

# Crop a region
/_ipx/crop_100_50_300_200,f_auto/image.jpg

# Resize with fit and position
/_ipx/s_800x600,fit_cover,position_top,f_auto/image.jpg

# Apply effects
/_ipx/w_300,rotate_90,blur_5,grayscale_true,f_auto/image.jpg

These operations pass through to ipx unchanged via operationsGenerator; no mapping is needed. This follows the same pattern as imgix and cloudinary providers which expose provider-specific operations beyond the standard width/height/quality/format.

Test coverage has also expanded to cover some of these new params.

[changeset-bot]

🦋 Changeset detected

Latest commit: aa24c12

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

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unpic	Minor

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[ascorbic]

Thanks!