feat: add puzzle clear template runtime

server-rs/crates/module-puzzle-clear/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "module-puzzle-clear"
+edition.workspace = true
+version.workspace = true
+license.workspace = true
+
+[features]
+default = []
+spacetime-types = ["dep:spacetimedb"]
+
+[dependencies]
+serde = { workspace = true }
+shared-kernel = { workspace = true }
+spacetimedb = { workspace = true, optional = true }