Improve resource UX with collapsible optional params

[285729101]

Fixes #107

The resource parameter forms were showing all fields in a flat list which made it hard to see what's actually required vs optional. This was especially noisy for resources with many optional params.

Changes:

• Required fields are now shown at the top of each section, always visible
• Optional fields are collapsed by default behind a clickable "N optional parameters" toggle
• Added a small summary at the top of the form showing the count of required vs optional params
• Query parameters section now has a proper title (was missing before)
• Added "optional" label next to non-required field names for clarity

Used the existing Collapsible component from radix so no new dependencies needed.

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[285729101]

@jasonhedman @shafu0x cleaned up the resource registration form — required fields are always visible, optional ones are in a collapsible section. Reduces visual noise for simple resources.