message: add lerna scripts for prerelease and graduate
diff: "packages-build": "lerna run build",
  "test:watch": "npm run test -- --watch --collect-coverage=false",
  "publish": "lerna publish --conventional-commits",
  + "prerelease": "lerna publish --conventional-commits --conventional-prerelease",
  + "graduate": "lerna publish --conventional-commits --conventional-graduate",
  "lint": "eslint .",
  "coveralls": "jest --runInBand --coverage && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
  "integration": "jest --config jest.integration.config.json --setupTestFrameworkScriptFile=./jest.integration.setup.js",
  