Added support for basic request authorization and bearer token author…

[pratapsingh9]

PR Description

New Authorization Widget Implementation

Purpose: Built a clean authorization widget that handles all auth functionality while matching our app's design system.

Key Features:

• 🛡️ Supports Basic Auth + Bearer Token
• 👁️ Toggleable password visibility
• 🔄 Live header updates
• 🎨 Consistent UI with our design
• 🧩 Modular architecture

Implementation:

• New EditRequestAuthorization widget
• AuthType enum (none/basic/bearer)
• Proper Base64 handling for Basic Auth
• Integrated with header system
• Separated UI/business logic
• Optimized state management

Behavior:

• Auto-detects existing auth headers
• Dynamic field display per auth type
• Instant header updates
• Preserves state between auth types
• Handles edge cases gracefully

Design:

• Followed existing UI patterns
• Consistent spacing/typography
• Responsive layout
• Used shared design tokens

Optimizations:

• Minimal rebuilds
• Efficient state handling
• Lightweight widget tree
• Memoized heavy operations

Screenshots

Related Issues

Closes:

• #610 Add API Auth: Basic authentication
• #612 Add API Auth: Bearer token

Checklist

• Followed contributing guide
• Synced with main
• Using latest Flutter stable
• All tests pass

Tests:

• Yes
• No (existing coverage sufficient + manual edge case testing)

Tested OS:

• Windows
• macOS
• Linux