Add blog: Who Maintains Apache Camel

[davsclaus]

Summary

• Add blog post about who maintains Apache Camel — data-driven analysis of 19 years of git history showing the core team's contribution (80-95% of all commits every year)
• Add "Who maintains the project" section to llms.txt with current top committers and affiliations

Test plan

• Verify blog post renders correctly with Hugo
• Check all links are valid
• Verify year-by-year data table renders properly

🤖 Generated with Claude Code