docs: Updates in docs folder

[Thanusree-Microsoft]

Purpose

• Updates in docs folder

Does this introduce a breaking change?

• Yes
• No

Other Information

Shifted documentation folder .md files to docs folder and
Updated azure_app_service_auth_setup.md file
Added create new app registration .md file.

[Copilot]

Pull Request Overview

This PR reorganizes and enhances the project documentation by relocating files, updating links, and adding a new guide for app registration.

• Moved and updated documentation files to the docs folder with corrected relative paths.
• Expanded the Azure App Service auth setup guide, adding prerequisites and refining instructions.
• Introduced create_new_app_registration.md to provide a standalone step-by-step app registration walkthrough.

Reviewed Changes

Copilot reviewed 52 out of 52 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
docs/create_new_app_registration.md	New standalone guide for creating Azure app registrations
docs/azure_app_service_auth_setup.md	Refactored authentication setup steps and added prerequisites
docs/DeploymentGuide.md	Updated links to point into the new docs directory
docs/CustomizeSolution.md	Added a Table of Contents and cleaned up duplicate entries
README.md	Updated image and doc links to reflect relocated docs folder

Comments suppressed due to low confidence (1)

docs/CustomizeSolution.md:43

• The import was removed but the example still mentions FunctionTool and Tool; update the snippet to either reintroduce the import or remove those references so the example remains valid.

from autogen_core.components.tools import FunctionTool, Tool