feat: allow usage of all supported sharp output formats

[benmccann]

closes #570

[changeset-bot]

🦋 Changeset detected

Latest commit: 938bd5a

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

This PR includes changesets to release 2 packages

Name	Type
imagetools-core	Minor
vite-imagetools	Minor

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[codecov]

Codecov Report

Merging #632 (938bd5a) into main (e78ab93) will decrease coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #632      +/-   ##
==========================================
- Coverage   93.72%   93.69%   -0.04%     
==========================================
  Files          33       33              
  Lines        1195     1189       -6     
  Branches      189      189              
==========================================
- Hits         1120     1114       -6     
  Misses         75       75              

Flag	Coverage Δ
imagetools-core	96.05% <100.00%> (-0.03%)	⬇️
vite-imagetools	82.00% <ø> (ø)

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Files	Coverage Δ
packages/core/src/transforms/format.ts	100.00% <100.00%> (ø)