🎨 Palette: [UX improvement] - Fix custom view roles and sibling spacing

[manupawickramasinghe]

💡 What:

1. Added semantic button roles (info.className = Button::class.java.name) to custom clickable TextView views (textView6 for IP copy, textView2 for Repo link).
2. Added android:layout_marginEnd="16dp" to horizontally stacked sibling controls (buttonKill, qual_feedback) in fragment_camera.xml.

🎯 Why:

1. Screen readers were announcing the text of the custom clickable views, but without a semantic role, users might not realize they are interactive buttons.
2. Sibling elements in horizontal layouts lacked consistent spacing, creating cluttered visual padding and increasing the risk of mis-taps on touch screens.

📸 Before/After:

• Before: Custom clickable views lacked semantic context for screen readers; the Stop button and Bitrate text were flush against the edge or adjacent elements.
• After: Screen readers announce "Button" for custom clickable views; horizontal elements have consistent 16dp spacing.

♿ Accessibility:

• Improved structural context for visually impaired users by explicitly declaring interactive custom views as "Buttons" to assistive technologies.
• Improved motor accessibility and touch targets by strictly enforcing a minimum 16dp margin between sibling elements.

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PR created automatically by Jules for task 17887191141488524281 started by @manupawickramasinghe

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