Add telemetry for VS extension and tools

Details about Problem

nanoFramework area: ( Visual Studio extension | Other tools )

VS version: All

VS extension version: All

Target: N/A

Firmware image version: N/A

Description

Although Telemetry can be deemed controversial, we are an open source project and need this data in order to improve certain aspects of nanoFramework. It would be beneficial to add it in certain areas. Namely this would involve:

• nanoff (nanoFirmwareFlasher)
• VS Extension (nanoFramework)
• VS Code Extension (nanoFramework)

Although "opt-in" would be preferential, it is unlikely (with the current userbase) to attract enough support to give enough detail. We should consider a commercial option to allow "opt-out".

Most viable solution is to follow https://learn.microsoft.com/en-us/dotnet/core/diagnostics/observability-with-otel and https://learn.microsoft.com/en-us/azure/azure-monitor/app/opentelemetry-enable?tabs=net