Add LocalProvider

[iRevive]

Follow-up to #420 (comment).

Motivation

Currently, there is no way to provide an arbitrary IOLocal or Local instance to certain OtelJava methods.
For example, you cannot use OtelJava.resource with an arbitrary IOLocal instance.

Why would you want to use a custom IOLocal? To have direct access to the Context and keep the benefits of the resource API. For example, #431 (comment).

Drawbacks

1. LocalProvider is kinda a magic implicit. The derivation logic may be confusing for newcomers
2. In some cases, the explicit type must be provided (e.g. OtelJava.autoConfigured[IO]()).

---

The LocalProvider has usages beyond OtelJava. It fits nicely into the SDK module too:

otel4s/sdk/all/src/main/scala/org/typelevel/otel4s/sdk/OpenTelemetrySdk.scala

Lines 182 to 194 in 34a5092

	def loadSdk(
	resource: TelemetryResource,
	config: Config
	): Resource[F, OpenTelemetrySdk[F]] =
	Resource.eval(Random.scalaUtilRandom[F]).flatMap { implicit random =>
	Resource.eval(LocalProvider[F, Context].local).flatMap {
	implicit local =>
	implicit val console: Console[F] = Console.make[F]
	val builder =
	SdkTracerProvider.builder[F].withResource(resource)
	for {

.

[NthPortal]

is this waiting on something?

[iRevive]

Not really, we can merge this one.