Add custom leagues/tournaments and more custom clubs

One of the most requested features for Career Mode is the ability to create fully custom leagues and tournaments with multiple custom clubs.

Custom Leagues: Let us build our own league structure (number of teams, divisions, promotion/relegation).

Multiple Custom Clubs: Allow us to design more than one club, so we can fill a whole league or tournament with teams we’ve created.

Custom Tournaments: Add the option to design international or domestic-style cups (knockout, groups, round robin).

Deeper Club Creation: Expand the Create-a-Club mode with more kits, badges, and stadium customization options.