Add --no-newline option to nu (#12410)

# Description
I have `nu` set as my shell in my editor, which allows me to easily pipe
selections of text to things like `str pascal-case` or even more complex
string operation pipelines, which I find super handy. However, the only
annoying thing is that I pretty much always have to add `| print -n` at
the end, because `nu` adds a newline when it prints the resulting value.

This adds a `--no-newline` option to stop that from happening, and then
you don't need to pipe to `print -n` anymore, you can just have your
shell command for your editor contain that flag.

# User-Facing Changes
- Add `--no-newline` command line option

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

benches/benchmarks.rs

@@ -85,6 +85,7 @@ fn bench_command_with_custom_stack_and_engine(
                 &mut stack.clone(),
                 PipelineData::empty(),
                 None,
+                false,
             )
             .unwrap();
         })
@@ -104,6 +105,7 @@ fn setup_stack_and_engine_from_command(command: &str) -> (Stack, EngineState) {
         &mut stack,
         PipelineData::empty(),
         None,
+        false,
     )
     .unwrap();
 
@@ -263,6 +265,7 @@ mod eval_commands {
                     &mut nu_protocol::engine::Stack::new(),
                     PipelineData::empty(),
                     None,
+                    false,
                 )
                 .unwrap();
             })