[WIP] Add welcoming README for Learn Blazor repository

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>create readme</issue_title>
<issue_description>This repo contains the source of https://learnblazor.azurewebsites.net/ Please create a welcoming readme.

Explain that this website connects directly to an MCP server, which is intentional to understand what content is available in the Learn knowledge service. Normally an MCP server is used by an AI agent with language model that interprets the user's question, sends it to the MCP Server and uses the response to create a human answer. </issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes create readme #8

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