Losuapi

more api endpoints finished:
- user_beatmap_score
- user_beatmap_scores
- beatmap_scores
- beatmaps
- beatmap
- beatmap_attributes
- user_kudosu
- user_scores
- ranking

api endpoints implemented:

- Client Credentials Grant
- Lookup Beatmap
- User
-
[Osu! api reference page](https://osu.ppy.sh/docs/index.html)

api endpoints implemented:
- Client Credentials Grant
- Lookup Beatmap

[Osu! api reference page](https://osu.ppy.sh/docs/index.html)