Feature/read progress tracking

[Nareshkumawat-star]

PR Description

This PR introduces Read Progress Tracking for articles, allowing users to seamlessly resume reading long-form content.

Key Changes:

• Local Storage (ReadProgress.ts): Implemented AsyncStorage utility to safely save and fetch scroll progress (0-100%).
• Global State (dataSlice.ts): Added a readProgress dictionary to the Redux store. Progress for all saved articles is loaded globally on app launch via HomeScreen.tsx.
• Continue Reading Prompt (ArticleScreen.tsx): Added onScroll listeners to calculate scroll percentage dynamically. If a user revisits an article and has read between 10% and 95%, a non-intrusive floating "Continue Reading" prompt appears, allowing them to tap "Resume" and automatically scroll to their previous position.
• Progress Bar Indicator (ArticleCard.tsx): Integrated a subtle, horizontal progress bar at the bottom of the article card container on list screens to visually indicate the user's progress.
• Note: Backend synchronization was not implemented as the Node.js backend repository was not available in the workspace. Progress is strictly stored on-device.

Type of Change

• Bug fix (change which fixes an issue)
• New feature (change which adds functionality)
• Documentation update

Select your work-area

• Frontend
• Backend
• Documentation
• Others

Related Issue

N/A

Fixes #1274

N/A

Checklist

• I have updated my branch and synced it with the project's 'develop' branch before making this PR.
• I have optimized the file changes.
• I have added a snapshot of my work example.
• I have made a PR to the project's develop branch.

Undertaking

• My code follows the style guidelines of this project.
• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.

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