Manual impl of Debug on Token (#11958)

## Summary

I look at the token stream a lot, not specifically in the playground but
in the terminal output and it's annoying to scroll a lot to find
specific location. Most of the information is also redundant.

The final format we end up with is: `<kind> <range> (flags = ...)` e.g.,
`String 0..4 (flags = BYTE_STRING)` where the flags part is only
populated if there are any flags set.

crates/ruff_python_parser/src/token.rs

@@ -16,7 +16,7 @@ use ruff_python_ast::str_prefix::{
 use ruff_python_ast::{AnyStringFlags, BoolOp, Int, IpyEscapeKind, Operator, StringFlags, UnaryOp};
 use ruff_text_size::{Ranged, TextRange};
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Clone, Copy, PartialEq, Eq)]
 pub struct Token {
     /// The kind of the token.
     kind: TokenKind,
@@ -81,6 +81,26 @@ impl Ranged for Token {
     }
 }
 
+impl fmt::Debug for Token {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{:?} {:?}", self.kind, self.range)?;
+        if !self.flags.is_empty() {
+            f.write_str(" (flags = ")?;
+            let mut first = true;
+            for (name, _) in self.flags.iter_names() {
+                if first {
+                    first = false;
+                } else {
+                    f.write_str(" | ")?;
+                }
+                f.write_str(name)?;
+            }
+            f.write_str(")")?;
+        }
+        Ok(())
+    }
+}
+
 /// A kind of a token.
 #[derive(Copy, Clone, PartialEq, Eq, Hash, Debug, PartialOrd, Ord)]
 pub enum TokenKind {