docs: updated root readme & ui/ux change for progress display

[ishuar]

• Updated Readme
• Similar color and config for progress display panel

[Copilot]

Pull Request Overview

This PR focuses on UI/UX improvements for progress display consistency and documentation updates. The changes standardize the color scheme for scanning progress panels and remove emoji characters from debug logging for cleaner output.

Key changes:

• Standardized progress display panel colors (white text, bright blue borders)
• Removed emoji from debug logging messages
• Comprehensive README update with enhanced documentation structure and logging capabilities

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
cli.py	Updates progress panel styling to use white text and bright blue borders for consistency
aws_scanner_lib/resource_groups_utils.py	Removes emoji from debug log message for cleaner output
README.md	Major documentation overhaul with expanded sections on logging, debugging, and usage examples

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