feat(info-window): add cross-platform info window support

[mym0404]

Type of change

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhance (enhance performance, api, etc)
• Chore
• This change requires a documentation update
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

What does this change?

• Add end-to-end InfoWindow support across JS + native layers with a public useInfoWindow hook and map/marker command wiring.
• Implement and register native util/module paths on both Android and iOS for create/show/close/content-update/open-state operations.
• Add sample usage screen in example for map-position and marker-attached InfoWindow flows.
• Fix map command wiring and align open-state checks to actual native open state.
• Include repository guidance updates from hierarchical AGENTS files.

No linked issue.