Update Configuration Style Guide

[MrAlias]

The changes in #1155 should be propagated to all implementations of our configuration style and it should be captured in an update to the project style guide.

• Update CONTRIBUTING.md style guide
• Change all *Configure functions to New*Config

  • opentelemetry-go/exporters/otlp/otlp.go

    Line 62 in 36c323f

    func configureOptions(cfg *Config, opts ...ExporterOption) {

  • opentelemetry-go/api/trace/tracetest/config.go

    Line 52 in 36c323f

    func configure(opts ...Option) config {

  • https://github.com/open-telemetry/opentelemetry-go-contrib/blob/5997cc357c43b37dd7cc13de16fd3ac230d55642/instrumentation/host/host.go#L88
  • https://github.com/open-telemetry/opentelemetry-go-contrib/blob/5997cc357c43b37dd7cc13de16fd3ac230d55642/instrumentation/net/http/transport.go#L61
  • https://github.com/open-telemetry/opentelemetry-go-contrib/blob/5997cc357c43b37dd7cc13de16fd3ac230d55642/instrumentation/runtime/runtime.go#L90