toml: add support for arrays and maps of primitives in reflect<T> (#13245)

vlib/toml/tests/reflect_test.v

@@ -7,6 +7,19 @@ height = 1.97
 
 birthday = 1980-04-23
 
+strings = [
+  "v matures",
+  "like rings",
+  "spread in the",
+  "water"
+]
+
+bools = [true, false, true, true]
+
+floats = [0.0, 1.0, 2.0, 3.0]
+
+int_map = {"a" = 0, "b" = 1, "c" = 2, "d" = 3}
+
 [bio]
 text = "Tom has done many great things"
 years_of_service = 5
@@ -26,6 +39,10 @@ struct User {
 	age      int
 	height   f64
 	birthday toml.Date
+	strings  []string
+	bools    []bool
+	floats   []f32
+	int_map  map[string]int
 
 	config toml.Any
 mut:
@@ -42,6 +59,15 @@ fn test_reflect() {
 	assert user.age == 45
 	assert user.height == 1.97
 	assert user.birthday.str() == '1980-04-23'
+	assert user.strings == ['v matures', 'like rings', 'spread in the', 'water']
+	assert user.bools == [true, false, true, true]
+	assert user.floats == [f32(0.0), 1.0, 2.0, 3.0]
+	assert user.int_map == {
+		'a': 0
+		'b': 1
+		'c': 2
+		'd': 3
+	}
 	assert user.bio.text == 'Tom has done many great things'
 	assert user.bio.years_of_service == 5