Implement scalafix migration rules

[iRevive]

Closes #413.

The changes:

- import org.typelevel.otel4s.java._
+ import org.typelevel.otel4s.oteljava._ 

- meter.counter("counter").create
+ meter.counter[Long]("counter").create

- meter.histogram("histogram").withUnit("unit").create
+ meter.histogram[Double]("histogram").withUnit("unit").create

- meter.upDownCounter("upDownCounter").create
+ meter.upDownCounter[Long]("upDownCounter").create

- meter.observableGauge("observableGauge").create(Async[F].pure(Nil))
+ meter.observableGauge[Double]("observableGauge").create(Async[F].pure(Nil))

- meter.observableCounter("observableCounter").create(Async[F].pure(Nil))
+ meter.observableCounter[Long]("observableCounter").create(Async[F].pure(Nil))

- meter.observableUpDownCounter("observableUpDownCounter").create(Async[F].pure(Nil))    
+ meter.observableUpDownCounter[Long]("observableUpDownCounter").create(Async[F].pure(Nil))