fix: checks before ending match and penalty shootout

[0xRampey]

This PR:

• Throws error if ending the match b/w teams with the same goal score
• Throws an error if trying to start a Penalty shootout b/w teams with different goal scores

[aashutoshrathi]

I would instead always compute the final score including penalties first.

Since overall being draw is what should throw error, not the initial score beings drawn