toml: support implicit array of tables key change (#12580)

vlib/toml/tests/array_of_tables_edge_case_1_test.v

@@ -0,0 +1,18 @@
+import os
+import toml
+import toml.to
+
+fn test_array_of_tables_edge_case_file() {
+	toml_file :=
+		os.real_path(os.join_path(os.dir(@FILE), 'testdata', os.file_name(@FILE).all_before_last('.'))) +
+		'.toml'
+	toml_doc := toml.parse(toml_file) or { panic(err) }
+
+	toml_json := to.json(toml_doc)
+	out_file :=
+		os.real_path(os.join_path(os.dir(@FILE), 'testdata', os.file_name(@FILE).all_before_last('.'))) +
+		'.out'
+	out_file_json := os.read_file(out_file) or { panic(err) }
+	println(toml_json)
+	assert toml_json == out_file_json
+}

vlib/toml/tests/testdata/array_of_tables_edge_case_1_test.out

@@ -0,0 +1 @@
+{ "Toml": [ { "ID": "1", "Index": 0, "Range": [ 0, 1, 2, 3 ], "Greeting": "Hello!", "Name": { "First": "Dolores", "Last": "Alvarado" }, "Friends": [ { "ID": 0, "Name": "Tom" }, { "ID": 1, "Name": "Dollie" } ] }, { "ID": "2", "Index": 1, "Range": [ 0, 1, 2, 3 ], "Greeting": "Hep!", "Name": { "First": "Rush", "Last": "Washington" }, "Friends": [ { "ID": 0, "Name": "Staci" }, { "ID": 1, "Name": "Dollie" } ] } ] }

vlib/toml/tests/testdata/array_of_tables_edge_case_1_test.toml

@@ -0,0 +1,33 @@
+[[Toml]]
+  ID = "1"
+  Index = 0
+  Range = [0, 1, 2, 3]
+  Greeting = "Hello!"
+  [Toml.Name]
+    First = "Dolores"
+    Last = "Alvarado"
+
+  [[Toml.Friends]]
+    ID = 0
+    Name = "Tom"
+
+  [[Toml.Friends]]
+    ID = 1
+    Name = "Dollie"
+
+[[Toml]]
+  ID = "2"
+  Index = 1
+  Range = [0, 1, 2, 3]
+  Greeting = "Hep!"
+  [Toml.Name]
+    First = "Rush"
+    Last = "Washington"
+
+  [[Toml.Friends]]
+    ID = 0
+    Name = "Staci"
+
+  [[Toml.Friends]]
+    ID = 1
+    Name = "Dollie"