[Feature] Implement Get Pokemon by Type

[sbmsr]

What you need to do

Our API needs to support the ability to Get Pokemon by Type

Expected behavior

1. a request to http://localhost:8000/pokemon/type/fairy should return HTTP status 200 and the following JSON body

[
	{
		"id": 35,
		"name_english": "Clefairy",
		"name_japanese": "ピッピ",
		"name_chinese": "皮皮",
		"name_french": "Mélofée",
		"hp": 70,
		"attack": 48,
		"defense": 45,
		"special_attack": 60,
		"special_defense": 65,
		"speed": 35,
		"types": [
			{
				"type": "Fairy"
			}
		]
	},
...

2. a request to http://localhost:8000/pokemon/type/webdevwithseb should return HTTP status 400 and the following JSON body

{
    error: "Bad request"
}