Source Generators: Insert Doc Link to target function

[cliedeman]

Is your feature request related to a problem? Please describe.
Insert clickable doc reference into generated code so that navigation is not lost.

User Code

// Navigation to original code lost
await context.CallSomeActivity(new Input());

From GeneratedDurableTaskExtensions.cs

public static Task<System.Threading.Tasks.Task> CallSomeActivityAsync(this TaskOrchestrationContext ctx, Input input, TaskOptions? options = null)
{
    return ctx.CallActivityAsync<System.Threading.Tasks.Task>("SomeActivity", input, options);
}

Are there any existing GitHub discussions or issues filed that help give some context to this proposal?
Links to any previous discussions or issues providing context for the proposal.

Add a doc reference I can click through

/// <summary>
/// Call the Activity <see cref="SomeNamespace.SomeClass.SomeActivity" />.
/// </summary>
public static Task<System.Threading.Tasks.Task> CallSomeActivityAsync(this TaskOrchestrationContext ctx, Input input, TaskOptions? options = null)
{
    return ctx.CallActivityAsync<System.Threading.Tasks.Task>("SomeActivity", input, options);
}

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[YunchuWang]

will be released in source generator package v1.0.0