[host-metrics] adapt default meter name to be the npm package name

[pichlermarc]

Currently the host-metrics package does not use the npm package name as the meter name. I think we should align this with other instrumentations and also use the npm package name for this instrumentation.

---

I agree that the npm package name makes more sense for Node. Yes, it looks like most of the instrumentations use their package name.

The host-metrics package differs slightly FWIW, using 'opentelemetry-host-metrics':

opentelemetry-js-contrib/packages/opentelemetry-host-metrics/src/BaseMetrics.ts

Lines 36 to 53 in 7ef45fa

	const DEFAULT_NAME = 'opentelemetry-host-metrics';
	/**
	* Base Class for metrics
	*/
	export abstract class BaseMetrics {
	protected _logger = api.diag;
	protected _meter: api.Meter;
	private _name: string;
	constructor(config: MetricsCollectorConfig) {
	this._name = config.name || DEFAULT_NAME;
	const meterProvider =
	config.meterProvider! || api.metrics.getMeterProvider();
	if (!config.meterProvider) {
	this._logger.warn('No meter provider, using default');
	}
	this._meter = meterProvider.getMeter(this._name, VERSION);

Originally posted by @trentm in #1713 (comment)