Improve room response embed

[PythonTryHard]

This PR addresses two issues in room response embed:

1. Too many members The bot will send the following errors if the Players field exceeds 1024 bytes due to too many members:

Command raised an exception: HTTPException: 400 Bad Request (error code: 50035): Invalid Form Body
In embed.fields.0.value: Must be 1024 or fewer in length.

This PR addressess this by capping the amount of member shown to 5, and add in a "and ... more" message. This comes with some minor refactoring.

2. Incorrect capitalisation Some field name in the room response embed is not capitalised correctly. This PR also improves this as well.

[PythonTryHard]

PR updated to draft due to a similar bug glossed over due to lack of testing.