feat: make to nuon raw option remove all white space (#15609)

# Description
Fixes #9942

This adds a new `--minified` flag to `to nuon` which removes all
possible white space. I added an example test to demonstrate the
functionality.

# User-Facing Changes

New flag becomes available to the user.

crates/nu-command/tests/commands/database/into_sqlite.rs

@@ -337,7 +337,7 @@ fn into_sqlite_big_insert() {
             let nuon = nuon::to_nuon(
                 &engine_state,
                 &value,
-                nuon::ToStyle::Raw,
+                nuon::ToStyle::Default,
                 Some(Span::unknown()),
                 serialize_types,
             )