Serializing structs as maps

[Sir-NoChill]

Problems serializing structs. Current behaviour:

[
  0x20,
  {
    "file:",
    true,
    true,
  }
]

Expected to serialize with field names:

[
	32,
	{
		"scheme": "customfs",
		"has_hierarchical_uris": true,
		"is_globbable": true
	}
]

Unsure of how to do so.

[Sir-NoChill]

Figured it out. Needed to add the .with_struct_map() trait to the serializer function. See the next PR. Will link.