docs: Revise structure and enhance Local Deployment Guide

[Harsh-Microsoft]

Purpose

This pull request adds several new documentation files to help users set up, customize, and manage Azure resources for deployments. The most important changes are the addition of guides for Azure account setup, customizing deployment parameters, checking OpenAI model quotas, and cleaning up resources after failed deployments.

Azure Setup and Permissions

• Added docs/azure_account_setup.md with step-by-step instructions for creating an Azure account, verifying required permissions, and viewing role assignments in the Azure Portal.

Deployment Customization

• Added docs/customizing_azd_parameters.md detailing all configurable Azure deployment parameters, their default values, and instructions for overriding them using azd env set. Includes important notes for PostgreSQL deployments and region compatibility.

Resource Management and Cleanup

• Added docs/delete_resource_group.md with a detailed guide (including screenshots) on how to manually delete resource groups or individual resources in the Azure Portal after a failed deployment, and troubleshooting locked resources.

OpenAI Model Quota Management

• Added docs/azure_openai_model_quota_settings.md with instructions for checking and updating Azure OpenAI model quotas, including navigation steps in the Azure AI Foundry portal.

Does this introduce a breaking change?

• Yes
• No

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information