refactor: hardcode key/value schema in table libraries (#2328)

Co-authored-by: yonada <[email protected]>

.changeset/tough-pumpkins-reply.md

@@ -0,0 +1,16 @@
+---
+"create-mud": patch
+"@latticexyz/store": minor
+"@latticexyz/world": minor
+"@latticexyz/world-modules": minor
+---
+
+Moved key schema and value schema methods to constants in code-generated table libraries for less bytecode and less gas in register/install methods.
+
+```diff
+-console.log(SomeTable.getKeySchema());
++console.log(SomeTable._keySchema);
+
+-console.log(SomeTable.getValueSchema());
++console.log(SomeTable._valueSchema);
+```