feat(common,store,world): add internal table functions and use them f…

…or internal mud logic (#1513)

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

.changeset/thin-terms-lay.md

@@ -0,0 +1,25 @@
+---
+"@latticexyz/cli": patch
+"@latticexyz/common": minor
+"@latticexyz/store": minor
+"@latticexyz/world": patch
+---
+
+Generated table libraries now have a set of functions prefixed with `_` that always use their own storage for read/write.
+This saves gas for use cases where the functionality to dynamically determine which `Store` to use for read/write is not needed, e.g. root systems in a `World`, or when using `Store` without `World`.
+
+We decided to continue to always generate a set of functions that dynamically decide which `Store` to use, so that the generated table libraries can still be imported by non-root systems.
+
+```solidity
+
+library Counter {
+  // Dynamically determine which store to write to based on the context
+  function set(uint32 value) internal;
+
+  // Always write to own storage
+  function _set(uint32 value) internal;
+
+  // ... equivalent functions for all other Store methods
+}
+
+```