feat: add a health check handler (#146)

Description

• add GET /healthz endpoint
• log incoming requests
• add version and build time to response
• add available communication types to response
• describe Joe API
• provide more details for 404 Not Found endpoints

Related issue

#146 (closed)

Examples

Checklist

• the MR description has been reviewed
• this MR contains text changes and they have been reviewed OR there are no texts changes
• this MR contains GUI/CLI changes and they have been reviewed OR there are no GUI/CLI changes
• this MR contains API changes and they have been reviewed OR there are no API changes

Closes #146 (closed)