Crate unification (#88)

* move client/server/config into shared

* move platforms into shared

* move head drops into shared

* move tb_entities to shared

* reduce server to just a call into shared

* get solo play working

* fix server opening window

* fix fmt

* extracted a few more modules from client

* near completely migrated client

* fixed duplicate CharacterInputEnabled definition

* simplify a few things related to builds

* more simplifications

* fix warnings/check

* ci update

* address comments

* try fixing macos steam build

* address comments

* address comments

* CI tweaks with default client feature

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Co-authored-by: PROMETHIA-27 <electriccobras@gmail.com>

crates/hedz_reloaded/src/physics_layers.rs

@@ -0,0 +1,13 @@
+use avian3d::prelude::PhysicsLayer;
+use bevy::reflect::Reflect;
+
+#[derive(PhysicsLayer, Clone, Copy, Debug, Default, Reflect)]
+pub enum GameLayer {
+    #[default]
+    Level,
+    Player,
+    Npc,
+    Projectile,
+    CollectiblePhysics,
+    CollectibleSensors,
+}