Release v0.2.6

Changes

• chore: bump version to v0.2.6
• Update Makefile to include 'workload.go' in 'basic example' build command. Commented out 'IngestURL' in main.go to simplify setup comments. Enhanced error handling in pprofio.go by checking for errors during profiler creation and returning informative error messages.

Full Changelog: v0.2.5...v0.2.6