feat(component): add Progress component

[alirezanaseri548]

Description

Adds a new Progress component to the template library, implementing the request in #30.

It renders a horizontal progress bar that represents the completion percentage (0–100) of a task. The API mirrors shadcn/ui's Progress (a value prop from 0 to 100) so it feels familiar to web contributors, while rendering native Views.

Closes #30

What's added

• packages/cli/templates/progress/index.tsx — the Progress component
• packages/cli/templates/progress/styles.ts — light/dark class names following the project's theming convention

Implementation notes

• Follows existing conventions: uses the same index.tsx + styles.ts folder layout and the cn utility as the other templates (e.g. badge, card, aspectratio).
• Light/dark theming: mode prop toggles between bg-primary/bg-secondary (light) and bg-dark-primary/bg-dark-secondary (dark).
• Value clamping: value is clamped to [0, 100] so the indicator never overflows the track or collapses to a negative width.
• Accessible: sets accessibilityRole="progressbar" with accessibilityValue={{ min: 0, max: 100, now }} so screen readers announce progress correctly.
• Extensible: supports className (track) and indicatorClassName (fill), and spreads the rest of ViewProps.

Usage

import { Progress } from './progress';

<Progress value={60} />
<Progress value={60} mode="dark" />

How Has This Been Tested?

• tsc --noEmit passes with no errors.
• turbo run build succeeds.
• prettier --write applied; files match the repo's formatting.
• Manually reviewed the rendering logic and class names against existing components (badge, card, aspectratio) for consistency.

Screenshots / Recording

This PR only adds template files consumed by the CLI; visual verification can be done by adding the component to the examples app on request.

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have read the CONTRIBUTING document

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