fix reactivity - add solid exports

Author: riccardoperra

packages/state/package.json

@@ -37,6 +37,7 @@
   "exports": {
     ".": {
       "types": "./dist/index.d.ts",
+      "solid": "./dist/index.js",
       "import": "./dist/index.js",
       "browser": "./dist/index.js",
       "node": "./dist/index.js",