chore(scripts): add build and test scripts for ci (#4085)

Author: trivikr

package.json

@@ -8,6 +8,7 @@
     "bootstrap": "yarn",
     "bootstrap:ci": "yarn install --frozen-lockfile",
     "build:all": "yarn build:crypto-dependencies && lerna run build",
+    "build:ci": "lerna run build --since main --include-dependencies",
     "build:clients:generic": "lerna run --scope '@aws-sdk/aws-echo-service' --include-dependencies build",
     "build:clients:since:release": "yarn build:packages && lerna run build $(lerna changed | grep -e '@aws-sdk/[client|lib]-*' | sed 's/^/ --scope /' | tr '\n' ' ')",
     "build:crypto-dependencies": "lerna run --scope '@aws-sdk/{types,util-utf8-browser,util-locate-window,hash-node}' --include-dependencies build",
@@ -27,6 +28,7 @@
     "lerna:version": "lerna version --exact --conventional-commits --no-push --no-git-tag-version --no-commit-hooks --loglevel silent --yes",
     "local-publish": "node ./scripts/verdaccio-publish/index.js",
     "test:all": "yarn build:all && jest --coverage --passWithNoTests && lerna run test --scope '@aws-sdk/{fetch-http-handler,hash-blob-browser}' && yarn test:versions",
+    "test:ci": "lerna run test --since main --exclude-dependents",
     "test:e2e": "yarn build:e2e && node ./tests/e2e/index.js",
     "test:functional": "jest --passWithNoTests --config tests/functional/jest.config.js && lerna run test:unit --scope \"@aws-sdk/client-*\"",
     "test:integration": "jest --config jest.config.integ.js --passWithNoTests",