Lightyear setup (#55)

crates/server/Cargo.toml

@@ -4,6 +4,7 @@ version = "0.1.0"
 edition = "2024"
 
 [features]
+default = ["lightyear/server"]
 dbg = ["avian3d/debug-plugin", "dep:bevy-inspector-egui", "shared/dbg"]
 
 [dependencies]
@@ -19,6 +20,8 @@ bevy_debug_log = { workspace = true }
 bevy_sprite3d = { workspace = true }
 bevy_trenchbroom = { workspace = true }
 happy_feet = { workspace = true }
+lightyear = { workspace = true }
+lightyear_avian3d = { workspace = true }
 nil = { workspace = true }
 rand = { workspace = true }
 ron = { workspace = true }