fix sequence at end of group, support bare sequences

tests/data/messy.vdf

@@ -8,6 +8,6 @@
     array "3"
     windows_path "C:\test\no newline"
 
-    \\"$translucent" 1 // this is read vdf written by real valve developers
-    "$envmaptint" .5 .5 .5 // found in the wild, pretty sure they mean "[.5 .5 .5]", but it ends up working by accident with a stray `.5 = .5` kv
+    \\"$translucent" 1 // this is real vdf written by real valve developers
+    "$envmaptint" .5 .5 .5
 }

tests/data/serde_array_type.vdf

@@ -5,4 +5,5 @@
     single 1.2
     triple "{1.2 1.3 1.4}"
     single_int 2
+    another_tuple 8 foo 0
 }

tests/serde.rs

@@ -18,6 +18,7 @@ enum Expected {
         single: SingleOrTriple<f32>,
         triple: SingleOrTriple<f32>,
         single_int: SingleOrTriple<f32>,
+        another_tuple: (u8, String, bool),
     },
     LightmappedGeneric {
         #[serde(rename = "$baseTexture")]
@@ -45,9 +46,7 @@ enum Expected {
         #[serde(rename = r#"\\"$translucent""#)]
         translucent: bool,
         #[serde(rename = "$envmaptint")]
-        env_map_tint: f32,
-        #[serde(rename = ".5")]
-        spare: f32,
+        env_map_tint: [f32; 3],
     },
     UserConfigData {
         #[serde(rename = "Steam")]

tests/snapshots/serde__table__tests__data__serde_array_type.vdf.snap

@@ -4,6 +4,7 @@ expression: result
 ---
 {
   "Types": {
+    "another_tuple": "8",
     "fixed_array": [
       "1",
       "2",
@@ -13,6 +14,7 @@ expression: result
       "1",
       "2.2",
     ],
+    "foo": "0",
     "single": "1.2",
     "single_int": "2",
     "triple": [

tests/snapshots/serde__tests__data__internal_tag.vdf.snap

@@ -0,0 +1,16 @@
+---
+source: tests/serde.rs
+expression: out
+---
+vmt_reader::unexpected_token
+
+  × invalid type: boolean `true`, expected u32
+    ╭─[6:9]
+  5 │       }
+  6 │ ╭─▶   data2 {
+  7 │ │       kind Bar
+  8 │ │       val1 1
+  9 │ ├─▶   }
+    · ╰──── invalid type: boolean `true`, expected u32
+ 10 │     }
+    ╰────

tests/snapshots/serde__tests__data__messy.vdf.snap

@@ -11,6 +11,5 @@ r#Resource/specificPanel.res(
   ],
   windows_path: "C:\\test\\no newline",
   r#\\"$translucent": true,
-  r#$envmaptint: 0.5,
-  r#.5: 0.5,
+  r#$envmaptint: (0.5, 0.5, 0.5),
 )

tests/snapshots/serde__tests__data__serde_array_type.vdf.snap

@@ -12,4 +12,5 @@ Types(
   single: 1.2,
   triple: (1.2, 1.3, 1.4),
   single_int: 2.0,
+  another_tuple: (8, "foo", false),
 )