Task chains

[ruslanmogilevskiy]

The discussion is started here.

Problem:
Managing build task dependencies in Cake Frosting can become challenging as projects grow, especially when maintaining and modifying task chains later. While existing solutions (IsDependentOn/IsDependeeOf attributes and Cake.Graph) help visualize dependencies, they don't provide a clear, maintainable way to manage the task execution chain.

Solution:
This PR introduces a Task Chain paradigm that allows developers to:

• Define task execution order in a clear, sequential manner
• Organize tasks into logical groups with support for nested grouping
• Reference tasks by both type and name
• Maintain compatibility with existing dependency systems

The task chain is enabled with a single line of the configuration code:

return new CakeHost()
    ...
	.UseChainedTaskConfigurator<AppTaskChainProvider>()
	.Run(args);

Example usage:

class AppTaskChainProvider : ITaskChainProvider
{
    public TaskChainItem GetChain()
    {
        return Chain
            .Task<Task1>()
            .Group("Do something", _ =>
            {
                 // Reference the task type.
                _.Task<Task2>()
                 // Reference the task by name ([TaskName("Task3: do something")]).
                 .Task("Task3: do something");
            })
        // Task chain inline groups example.
        // .Group("Do something else", _ =>
        // {
        //     _.Task<SomeTask>()
        //      .Group("Internal group", _ =>
        //         {
        //             _.Task<OtherTask>();
        //         })
        //      .Task("Task name");
        // })
            // The last task in the chain which the Default task will be dependent on to execute all the chain.
            .Task<FinalTask>();
    }
}

This approach significantly improves build script maintainability and readability, making it easier to modify task chains as projects evolve. The implementation requires minimal configuration and can be gradually adopted alongside existing task dependencies

[ruslanmogilevskiy]

@microsoft-github-policy-service agree

[ruslanmogilevskiy]

@devlead , I've completed the PR description.