Add a global eslint command and run in CI

.gitlab-ci.yml

package.json

packages/check-in-place-select/.eslintignore

packages/check-in-place-select/.eslintrc.json

packages/check-in-place-select/package.json

packages/check-in-place-select/src/check-in-place-select.js

...eck-in-place-select/src/dbp-check-in-place-select-demo.js

packages/check-in-place-select/src/i18n/de/select2.js

packages/check-in-place-select/src/i18n/en/select2.js

packages/common/styles.js

packages/common/utils.js

packages/data-table-view/.eslintignore

packages/data-table-view/.eslintrc.json

packages/data-table-view/package.json

packages/data-table-view/src/data-table-view.js

packages/language-select/.eslintignore

packages/language-select/.eslintrc.json

packages/language-select/package.json

packages/language-select/src/language-select.js

packages/matomo/.eslintignore