Improve unranked play notice

[Rian8337]

With the new mods and features added, many players are confused as to which one of them (especially mods) are unranked.

With that in consideration, this PR changes a few things, namely:

• The score multiplier text on mod menu will be set to red if an unranked mod is active (perhaps a better approach of this is to directly add "unranked" at the end of the text, will consider).
• If the player activates at least one unranked features, the unranked sprite will be shown temporarily at the start of the gameplay.
• Give custom message based on enabled unranked features instead of fixed message at score submission.

[kairusds]

With the new mods and features added, many players are confused as to which one of them (especially mods) are unranked.

With that in consideration, this PR changes a few things, namely:

• The score multiplier text on mod menu will be set to red if an unranked mod is active (perhaps a better approach of this is to directly add "unranked" at the end of the text, will consider).
• If the player activates at least one unranked features, the unranked sprite will be shown temporarily at the start of the gameplay.
• Give custom message based on enabled unranked features instead of fixed message at score submission.

I would recommend adding the UNRANKED text on the mod selection menu and making the text permanent when in-game instead of being temporary.

[Rian8337]

Superseded by #152.