Actor Model Rewrite

[HTGAzureX1212]

Rewrite the Discord frontend using the Actor Model, which also comes with a revamp of instance management.

• feat: start discord frontend rewrite #2869
• feat: init grpc and manager crates #2877
• feat: partial main for manager #2878
• feat: initial implementation of Identify handler #2879
• Instance Manager Identify #2881
• Session Start Limit in Protobuf #2884
• feat: enable manager to be exposed to devices in network #2886
• Manager: whoami Request #2888
• TUI Part I #2892
• TUI Part 2 #2907
• CARGO_BUILD_DATE: Zero-pad Date Fields #2908
• TUI Part 3 #2910
• TUI Logging #2911
• TUI: List Selection Wrapping #2912
• TUI: Rerender Page on Tab Change #2913
• TUI: Add Overview Page #2915
• TUI: More Information on Overview Page #2920