Initial commit and progress blocking out

src/storage/interface.rs

@@ -0,0 +1,11 @@
+use crate::storage::world::{BlockID, BlockPos};
+
+enum StorageInterface {
+    /// `ChangeBlock` changes the block at the world position given by `world_position` to the
+    /// target block id `BlockID`
+    ChangeBlock {
+        target_state: BlockID,
+        world_position: BlockPos,
+    },
+    ChangeBlockRange(BlockID, BlockPos, BlockPos),
+}