Improved samples: added weather tool in AspNetCoreSseServer and option to connect via http to AspNetCoreSseServer.

[sabbadino]

Motivation and Context

Currently the QuickStartClient contains samples using stdio only , no samples using http.
The AspNetCoreSseServer has been modified to add a new MCP tool (GetWeather).
The QuickStartClient has been modified to accept "http" as argument: If "http" is provided, it will connect to AspNetCoreSseServerb via http.
The QuickStartClient has been modified to allow LLM to have the conversation history context.

How Has This Been Tested?

No changes in the library, just adding a sample.

Breaking Changes

None

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• [X ] New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• [ X] I have read the MCP Documentation
• [ X] My code follows the repository's style guidelines
• [ X] New and existing tests pass locally
• [ X] I have added appropriate error handling
• [ X] I have added or updated documentation as needed

Additional context

N/A