Change SSE transport to streaming transport for MCP samples

[Copilot]

This PR migrates the MCP (Model Context Protocol) samples from SSE transport naming to streaming transport by renaming projects and namespaces as requested in the issue.

Changes Made

Project Renaming

• Renamed McpSample.AspNetCoreSseServer project to McpSample.AspNetCoreServer
• Updated all project references in the solution file and AppHost configuration
• Changed AppHost variable names from aspnetsseserver to aspnetserver

Namespace Updates

• Updated namespace declarations in Tools/Jokes.cs and Tools/WeatherTool.cs from McpSample.AspNetCoreSseServer to McpSample.AspNetCoreServer

Transport Configuration

• Verified the client transport is already using HttpTransportMode.StreamableHttp for the new streaming transport mode
• Updated transport display name from "AspNetCoreSse Server" to "AspNetCore Server"

Technical Details

The migration maintains the SseClientTransport class usage (which appears to be kept for API compatibility) but ensures it's configured with HttpTransportMode.StreamableHttp to use the new streaming transport mechanism instead of traditional Server-Sent Events.

All projects build successfully and the MCP server starts correctly, confirming the migration maintains full functionality while removing SSE naming references as requested.

Fixes #215.

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Pull Request Overview

This PR renames MCP (Model Context Protocol) sample projects from SSE (Server-Sent Events) to streaming transport terminology. The changes update project names, namespaces, and references to align with the new streaming transport approach while maintaining the same underlying functionality.

Key changes:

• Renamed the main server project from McpSample.AspNetCoreSseServer to McpSample.AspNetCoreServer
• Updated all namespace references in tool classes to match the new project structure
• Modified project references and solution file entries to reflect the renamed projects

Reviewed Changes

Copilot reviewed 6 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Program.cs (Chat)	Updated transport display name from "AspNetCoreSse Server" to "AspNetCore Server"
WeatherTool.cs	Changed namespace from McpSample.AspNetCoreSseServer to McpSample.AspNetCoreServer
Jokes.cs	Changed namespace from McpSample.AspNetCoreSseServer to McpSample.AspNetCoreServer
Program.cs (AppHost)	Updated project references and variable names from aspnetsseserver to aspnetserver
McpSample.AppHost.csproj	Updated project reference path to match renamed server project
Aspire.MCP.Sample.sln	Updated solution file entry for the renamed server project