.Net Processes - Map Step Feature

[crickman]

Motivation and Context

Fixes: #9193

Description

Map each value from a set to a map-operation and present the results as a set for potential reduction.

Includes:

• ProcessMapBuilder (Core)
• KernelProcessMap / KernelProcessMapState (Abstractions)
• LocalMap (LocalRuntime)
• MapActor (DaprRuntime)
• Serialization
• Unit Tests (exhaustive)
• Integration Tests
• Sample

Features:

• Executes map operations in parallel
• Handles when output type has been transformed from input type
• Accepts either step or subprocess for map operation
• Proxies events for edges defined directly on the map-step
• Allows additional (non proxied) edges for the map-operation
• Participates in state serialization

Follow-up:

• Documentation - .Net Processes - Document Map Step #9616

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• All unit tests pass, and I have added new tests where possible
• I didn't break anyone 😄