Refactor: introduce 2 associated functions to PipelineData (#16233)

# Description
As title: this pr is try to introduce 2 functions to `PipelineData`:
1. PipelineData::list_stream --> create a PipelineData::ListStream
2. PipelineData::byte_stream -> create a PipelineData::ByteStream
And use these functions everywhere.

### Reason behind this change
I tried to implement `pipefail` feature, but this would required to
change `PipelineData` from enum to struct. So use these functions can
reduce diff if I finally change to struct. [Discord message
here](https://discord.com/channels/601130461678272522/615962413203718156/1396999539000479784)
is my plan.

# User-Facing Changes
NaN

# Tests + Formatting
NaN

# After Submitting
NaN

crates/nu_plugin_example/src/commands/collect_bytes.rs

@@ -48,7 +48,7 @@ impl PluginCommand for CollectBytes {
         call: &EvaluatedCall,
         input: PipelineData,
     ) -> Result<PipelineData, LabeledError> {
-        Ok(PipelineData::ByteStream(
+        Ok(PipelineData::byte_stream(
             ByteStream::from_result_iter(
                 input.into_iter().map(Value::coerce_into_binary),
                 call.head,

crates/nu_plugin_example/src/commands/ctrlc.rs

@@ -45,6 +45,6 @@ impl PluginCommand for Ctrlc {
         eprintln!("interrupt status: {:?}", engine.signals().interrupted());
         eprintln!("peace.");
 
-        Ok(PipelineData::Empty)
+        Ok(PipelineData::empty())
     }
 }

crates/nu_plugin_example/src/commands/for_each.rs

@@ -53,7 +53,7 @@ impl PluginCommand for ForEach {
             let result = engine.eval_closure(&closure, vec![value.clone()], Some(value))?;
             eprintln!("{}", result.to_expanded_string(", ", &config));
         }
-        Ok(PipelineData::Empty)
+        Ok(PipelineData::empty())
     }
 }
 

crates/nu_plugin_example/src/commands/sum.rs

@@ -57,7 +57,7 @@ impl PluginCommand for Sum {
                     .with_label("can't be used here", call.head));
             }
         }
-        Ok(PipelineData::Value(acc.to_value(call.head), None))
+        Ok(PipelineData::value(acc.to_value(call.head), None))
     }
 }