Adding localization support to cheevos.c

[toadkarter]

Description

There were some TODOs surrounding unlocalized strings in cheevos.c, so I have added localization support to these in the same style as the rest of the project (i.e., added the relevant info to msg_hash and msg_hash_us.

Hopefully this is in line with what is expected, but if not please do let me know and I would be happy to make any changes.

Related Issues

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Related Pull Requests

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Reviewers

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[toadkarter]

@Jamiras Thank you for your helpful comments - I will make changes in a new commit just so that they are easier to review, and then if these are ok from your perspective I will squash these commits for readability in the main build

[LibretroAdmin]

Hi, just a couple of code style nits, single line code blocks don't need a bracket.