Connect X client to Y server

[BinToss]

This is going to be a somewhat massive undertaking with many sub-issues for prerequisites and client-server translations.

This may be recreated as a GitHub Milestone or Project if doing so helps with organization of related issues.

Note: Repo owners and Org. Admins/Teams (if repo is owned by an Organization) can update Issues' title, body, and other details as needed.

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Prerequisites

• [ ] Trial loads Retail maps
• [ ] Trial parses Retail commands
• [ ] Trial loads Custom Edition maps
• [ ] Trial parses Custom Edition commands
• [ ] Retail loads Trial maps
• [ ] Retail parses Trial commands
• [x] Retail loads Custom Edition maps
• [ ] Retail parses Custom Edition commands
• [ ] Custom Edition loads Trial maps
• [ ] Custom Edition parses Trial commands
• [ ] Custom Edition loads Retail maps
• [ ] Custom Edition parses Retail commands

Notes

• Trial has never received an official update. Because it's netcode may be significantly different than the other forks' netcode, this will be the lowest priority.
• To spearhead a framework that can be adapted to the other uses, we should prioritize connecting Retail clients to Custom Edition servers before anything else. This framework can then be copied and/or modified for the other netcode translation layers.