[Feature]: Microsoft Semantic Kernel integration

[HarshaNalluru]

Description

Add a Moss retrieval and memory plugin for Microsoft Semantic Kernel.

Use case

Semantic Kernel agents (Python and .NET) need low-latency retrieval grounded in the user's own data.

Proposed solution

A Moss plugin exposing search as an SK function. Mirror an existing integration package such as packages/strands-agents-moss. Moss docs: https://docs.moss.dev/docs/reference/sdk Semantic Kernel: https://github.com/microsoft/semantic-kernel

Alternatives considered

No response

[rohanshrma222]

@HarshaNalluru Can we raise two PR for this, one for python and one for .NET

Please assign this issue to me also.