.NET: Added GettingStarted example demonstrating Dapr as an agent provider

[WhitWaldo]

Added example demonstrating creating an AIAgent using the Microsoft.AI.Extensions implementation of IChatClient using Dapr as the inference back-end provider pointing to Ollama in this example.

Motivation and Context

I'm the maintainer of the Dapr .NET SDK. In the last major release, I added a package to our SDK release to support IChatClient from Microsoft.Extensions.AI using Dapr's Conversation building block. As Microsoft only recently released this agentic framework, I was reading through the examples and saw a great opportunity to list the newly minted package as a sample agent implementation to the existing list.

Description

This doesn't change anything about the framework itself and only adds an agent provider to the existing list of samples. I've included a sample Dapr component file, provided instructions in the README at the project level explaining prerequisites and setup instructions and have otherwise minimized other changes (e.g. adding a line to the central package management under the appropriate section).

The other itself should otherwise be quite straightforward and keeping in line with the demonstration used in other similar samples.

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the Contribution Guidelines
• All unit tests pass, and I have added new tests where possible
• Is this a breaking change? If yes, add "[BREAKING]" prefix to the title of the PR.

[Copilot]

Pull Request Overview

This PR adds a new sample demonstrating how to create an AIAgent using Dapr as the inference backend provider with Ollama. The sample follows the existing pattern of agent provider demonstrations and includes comprehensive setup instructions.

Key Changes:

• Added a new Agent_With_Dapr sample project with documentation and component configuration
• Registered the sample in the solution file and package dependencies
• Updated the AgentProviders README to include the new Dapr sample

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
dotnet/samples/GettingStarted/AgentProviders/README.md	Added entry for the new Dapr sample
dotnet/samples/GettingStarted/AgentProviders/Agent_With_Dapr/README.md	Created documentation with prerequisites and setup instructions
dotnet/samples/GettingStarted/AgentProviders/Agent_With_Dapr/Program.cs	Implemented sample demonstrating Dapr chat client integration
dotnet/samples/GettingStarted/AgentProviders/Agent_With_Dapr/Components/conversation-ollama.yaml	Added Dapr component configuration for Ollama
dotnet/samples/GettingStarted/AgentProviders/Agent_With_Dapr/Agent_With_Dapr.csproj	Created project file with necessary dependencies
dotnet/agent-framework-dotnet.slnx	Registered new project in solution
dotnet/Directory.Packages.props	Added Dapr.AI.Microsoft.Extensions package reference

[yaron2]

@stephentoub @DeagleGross Can we get some eyes on this? Thanks!