feat: add examples

examples/parse_file/array_example.toml

@@ -0,0 +1,12 @@
+integers = [ 1, 2, 3 ]
+colors = [ "red", "yellow", "green" ]
+nested_arrays_of_ints = [ [ 1, 2 ], [3, 4, 5] ]
+nested_mixed_array = [ [ 1, 2 ], ["a", "b", "c"] ]
+string_array = [ "all", 'strings', """are the same""", '''type''' ]
+
+# Mixed-type arrays are allowed
+numbers = [ 0.1, 0.2, 0.5, 1, 2, 5 ]
+contributors = [
+  "Foo Bar <foo@example.com>",
+  { name = "Baz Qux", email = "bazqux@example.com", url = "https://example.com/bazqux" }
+]