feat/Add optional DebugProbe Server ingestion

[georgidhristov]

Summary

Adds optional centralized ingestion from DebugProbe.AspNetCore to DebugProbe.Server.

When DebugProbe:ServerUrl is configured, captured request traces are still stored locally and are also sent to the server at POST /api/ingestion/requests. When no server URL is configured, DebugProbe continues to work in local-only mode.

Changes

• Added optional server configuration: ServerUrl, ApplicationId, ApplicationName, InstanceId
• Added a lightweight server client for forwarding captured request traces
• Wired the sample API to read DebugProbe server settings from configuration
• Added server read endpoints for telemetry UI data:
  • GET /api/requests
  • GET /api/exceptions
  • GET /api/heartbeats
• Added option validation and test coverage

Validation

• Built DebugProbe.AspNetCore
• Built DebugProbe.Server.Api
• Built DebugProbe.SampleApi
• Ran DebugProbe.AspNetCore.Tests: 62/62 passed