chore(nats sink): Refactor to use StreamSink components (vectordotdev#18243)

* Move to stream based sink

Signed-off-by: Stephen Wakely <[email protected]>

* Add request settings

Signed-off-by: Stephen Wakely <[email protected]>

* Updated docs and comments

Signed-off-by: Stephen Wakely <[email protected]>

* Dont need to take metadata

Signed-off-by: Stephen Wakely <[email protected]>

* Clippy

Signed-off-by: Stephen Wakely <[email protected]>

* Made Subject a Template in config

Signed-off-by: Stephen Wakely <[email protected]>

---------

Signed-off-by: Stephen Wakely <[email protected]>

Author: StephenWakely

src/internal_events/mod.rs

@@ -86,8 +86,6 @@ mod lua;
 mod metric_to_log;
 #[cfg(feature = "sources-mongodb_metrics")]
 mod mongodb_metrics;
-#[cfg(feature = "sinks-nats")]
-mod nats;
 #[cfg(feature = "sources-nginx_metrics")]
 mod nginx_metrics;
 mod open;
@@ -224,8 +222,6 @@ pub(crate) use self::loki::*;
 pub(crate) use self::lua::*;
 #[cfg(feature = "transforms-metric_to_log")]
 pub(crate) use self::metric_to_log::*;
-#[cfg(feature = "sinks-nats")]
-pub(crate) use self::nats::*;
 #[cfg(feature = "sources-nginx_metrics")]
 pub(crate) use self::nginx_metrics::*;
 pub(crate) use self::parser::*;