More bug fixes and small updates

- Add timeout capability and default to Agent
- Tighten up messaging
- Add checks for K8s client certificates and unsynced OneDrive files
- os-updates check maintains state and can wait before alarming; improved
  messaging
- Fix compatibility bug in processes check

Automatic builds and push to registry

Bug fixes and small updates

- Escape newline in check script output
- Skip non-existent tests rather than keel over and die
- k8s check script improvements
- Add support for Linux Mint, Alma Linux
- Reboot-needed detection for RH variants
- Message lists updates for Darwin
- Fix bad URI in register_node

New repository and new API

- Split from server repository; re-versioned, sort of, to match
- Using JSON with updated API
- Versioning via make
- Minor improvements to installer

First agent

Agent and status check scripts