Allow users to be able to toggle ignoreEmptyCollections when returning JSON from their Endpoints

[Andycharalambous]

Is your feature request related to a problem? Please describe. I need to be able to return JSON from APIs where empty collections are serialized as "myList": [] instead of excluded completely from the output. I noticed that in the HttpContentCodec there is a line that has the ignoreEmptyCollections config hard coded to be true:

https://github.com/zio/zio-http/blob/36df30fd5d02d33a4fe624ca57fde0076162f084/zio-http/shared/src/main/scala/zio/http/codec/HttpContentCodec.scala#L264

There is no way to change this that I can see. I can understand the reasoning, however I live in the real world where other downstream consumers of my APIs are expecting a non-missing field and they can't/won't change their systems to accommodate this.

Describe the solution you'd like Some way to configure how the JsonCodec is setup in zio-http rather than have it hard coded.

Describe alternatives you've considered Creating something like the following for each case class model works, but is clunky, just to get around the hard coded config:

case class Test(list: List[String])
object Test {
    implicit val schema : Schema[Test] = DeriveSchema.gen
    val codec: BinaryCodecWithSchema[Test] = BinaryCodecWithSchema(
      zio.schema.codec.JsonCodec.schemaBasedBinaryCodec,
      schema,
    )
    implicit val testHttpContentCodec: HttpContentCodec[Test] = zio.http.codec.HttpContentCodec.from(
      (MediaType.application.json, codec )
    )
 }

val endpoint = Endpoint(Method.GET / "test")
    .out[Test]

val route = endpoint.implement(handler(ZIO.succeed(Test(Nil))))

route.apply(Request.get("/test"))
// will output: {"list":[]}

Additional context Add any other context or screenshots about the feature request here.