[EXPERIMENTAL] 26w30b: Multiplayer / Shipyard

Some multiplayer and shipyards improvements!

Multiplayer:

Multiplayer lobby management has been overhauled:

• The new in-game lobby window shows lobby status and connected players, including their role, ping, and distance.

• Hosts can open or close their lobby at any time and choose Public, Private, or Friends Only visibility.

• Lobby IDs can be copied and shared, while the multiplayer browser can add and join a lobby directly from its ID.

=> please tell me what feature / bugfixes is the most urgent to you!

I will continue to add deeper steam integration (invite/join friends)

Shipyard:

The shipyard custom spawning UI has been improved:

• Reason for inability to spawn is written on the main tooltip

• Pin brick list: you can pin a brick list to browse through requirement more easily.

• Pinned brick quantities now show how many you have versus how many are required, in green when stocked and red when short.

Community Suggestion:

• #7718 Shipyard blueprint slots now show missing blocks on the full slot tooltip, and player shipyards can pin a scrollable required-brick list beside the blueprint window.

Bugfixes:

• Fixed a crash when hovering certain inventory or codex item slots with incomplete item data.

• Fixed a issue in solar body render-state updates when the local player or camera was not ready yet.

• #7933 Fixed spaceship F-menu crash when a station offered more than six contextual actions (mission delivery blocked).

• #7930 Fixed pistons becoming permanently unresponsive after setting their range to zero.

• Fixed a crash that could occur when editing rotator or hinge settings in multiplayer.

Thanks for playing!