[GameSearch] RAWG requires an api key

[Mibo5354]

It seems that rawg.io api requests requires an api key now, the cog will need this to be fixed.

python[1378890]: Traceback (most recent call last):
python[1378890]:   File "/home/discord/redenv/lib/python3.9/site-packages/discord/ext/commands/core.py", line 85, in wra>
python[1378890]:     ret = await coro(*args, **kwargs)
python[1378890]:   File "/home/discord/.local/share/Red-DiscordBot/data/bot/cogs/Downloader/lib/aiocache/decorators.p>
python[1378890]:     if cache_read:
python[1378890]:   File "/home/discord/.local/share/Red-DiscordBot/data/bot/cogs/Downloader/lib/aiocache/decorators.p>
python[1378890]:     if self.key_builder:
python[1378890]:   File "/home/discord/.local/share/Red-DiscordBot/data/bot/cogs/CogManager/cogs/gamesearch/gamesearc>
python[1378890]:     results = games["results"]
python[1378890]: KeyError: 'results'