WIP: add linting file & run lint

.eslintrc.js

babel.config.js

package-lock.json

src/App.vue

src/assets/js/formset_handlers.js

src/assets/js/map-util.js

src/assets/js/utils.js

src/assets/js/vector_tile_fix.js

src/axios-client.js

src/components/Dropdown.vue

src/components/ImportTask.vue

src/components/SearchFeature.vue

src/components/feature/FeatureAttachmentForm.vue

src/components/feature/FeatureExtraForm.vue

src/components/feature/FeatureLinkedForm.vue

src/components/feature/FeatureListTable.vue

src/components/feature/Feature_edit_modal.vue

src/components/feature_type/FeatureTypeCustomForm.vue

src/components/feature_type/SymbologySelector.vue

src/components/map-layers/SidebarLayers.vue