Also emit TokenKind in debug

Signed-off-by: Marcel Müller <neikos@neikos.email>

tests/cases/1-parsed@interpolation.snap

@@ -5,13 +5,13 @@ input_file: tests/cases/interpolation.nomo
 ---
 ParsedTemplate {
     tokens: [
-        "Hello! I'm" (0..10),
-        " " (10..11),
-        "{{" (11..13),
-        "=" (13..14),
-        " " (14..15),
-        "name" (15..19),
-        " " (19..20),
-        "}}" (20..22),
+        [Content]"Hello! I'm" (0..10),
+        [Whitespace]" " (10..11),
+        [LeftDelim]"{{" (11..13),
+        [WantsOutput]"=" (13..14),
+        [Whitespace]" " (14..15),
+        [Ident]"name" (15..19),
+        [Whitespace]" " (19..20),
+        [RightDelim]"}}" (20..22),
     ],
 }