Svelte Improvements

[storopoli]

Housekeeping

• Use snippets instead of slots (they are deprecated)
• Replace all props with let { ...everythingElse } = $props();

Enhancements

• Add Noncentrality parameter (δ/λ) in the UI
• Add Critical t/F/χ² in the UI
• Denominator df in Output (for ANOVA non-repeated/ANCOVA)
• Numerator df in Output (for ANOVA repeated measures/Linear regression)
• Add UI differences, e.g. Allocation Ratio (N2/N1) in independentSamplesTTest
• Expose different responses based on tests, e.g. Sample size group {1,2} in independentSamplesTTest

Nice to Have

• Vite caching
• Vite PWA