infra: CI / CD pipeline for Lyra

[KiaArmani]

Goal: Automated deployments of Lyra to Steam (Client) and a development cluster (Server).

• Pipeline should make use of UET. (https://docs.redpoint.games/uet/)
• A private docker image registry should be deployed.
• Game Client should be compiled for Windows and Linux, with SteamDeck being the target for Linux.

[KiaArmani]

Will be implemented using Jenkins, as it provides a nice and easy-to-use integration with Perforce.