chore: added postinstall scripts

package.json

@@ -32,6 +32,7 @@
         "test:file:long": "LONG_TESTS=true yarn hardhat test",
         "compile": "yarn hardhat compile --force && yarn run compile-abis",
         "prettify": "prettier --write tasks/**/*.ts test/**/*.ts types/*.ts contracts/**/*.sol",
+        "postinstall": "yarn run compile",
         "flatten": "sol-merger \"./contracts/**/*.sol\" ./_flat",
         "prepublishOnly": "yarn run compile"
     },