Caller label and build_info metric fixes

What's Changed

• Fix: update convenience package by @keturiosakys in #56
• Refactor & add more explicit decorator types by @oscarvz in #59
• Add caller label for "tracing lite" by @keturiosakys in #51
• Prevent node:async_hooks from being run in the browser by @oscarvz in #60
• Fix bug when no options are passed in decorator by @oscarvz in #61
• Improve documentation, add API reference by @keturiosakys in #62
• Fix build_info and add a unit test by @keturiosakys in #64
• Release v0.5.0 by @keturiosakys in #65

Full Changelog: v0.4...v0.5