chore: Add imposter script to package.json

package.json

@@ -25,6 +25,7 @@
     "test:coverage": "nyc --reporter=lcov --reporter=text-summary yarn test",
     "test:watch": "mocha --watch",
     "mocks": "yarn run wiremock --port 8010 --root-dir test/mocks",
+    "mocks:imposter": "imposter up test/imposter --port 8010",
     "test:browser": "wait-on tcp:127.0.0.1:8010 tcp:127.0.0.1:5010 && API_BASE_URL=http://127.0.0.1:8010 MOCK_API=true cucumber-js --config test/browser/cucumber.js --tags \"not @skip\"",
     "test:browser:ci": "npm-run-all -p -r start:ci mocks test:browser",
     "test:browser:only": "wait-on tcp:127.0.0.1:8010 tcp:127.0.0.1:5010 && API_BASE_URL=http://127.0.0.1:8010 MOCK_API=true cucumber-js --config test/browser/cucumber.js --tags \"@only and not @skip\"",