Implement searching for Japan region

[7bitlyrus]

Implement a search provider that exposes a dict of Games search results for a the Japan region.

Fetch https://search.nintendo.jp to allow games to be searched.
(Example endpoint: https://search.nintendo.jp/nintendo_soft/search.json?opt_hard=1_HAC&limit=300&page=1&q=foo)

Road map:

• Update Game data class to match/add data returned by API
• Implement search provider
• Write tests

[7bitlyrus]

It may be better to instead use https://www.nintendo.co.jp/data/software/xml/switch.xml