OpenTelemetry metrics extractor

Added

• OpenTelemetry instrumentations that emit metrics are now automatically extracted and reported to AppSignal. The metric provider is also globally available for you to send custom metrics using OpenTelemetry. Only gauges and counters are supported at the moment.

Fixed

• An issue with boolean options not being correctly parsed in the appsignal configuration file.
• An issue with MySQL queries with leading type indicators not being correctly sanitized.

See the Node.js 3.1.0 package changelog for more information.