Resolve "Harmonize prettier and eslint configs"

.eslintrc.yml

app/assets/javascripts/behaviors/markdown/copy_as_gfm.js

app/assets/javascripts/boards/components/board.js

app/assets/javascripts/boards/components/board_delete.js

app/assets/javascripts/boards/components/board_sidebar.js

app/assets/javascripts/boards/models/issue.js

app/assets/javascripts/boards/models/list.js

app/assets/javascripts/boards/stores/boards_store.js

app/assets/javascripts/commit/image_file.js

app/assets/javascripts/compare_autocomplete.js

.../javascripts/diff_notes/components/comment_resolve_btn.js

...s/javascripts/diff_notes/components/jump_to_discussion.js

...assets/javascripts/diff_notes/components/resolve_count.js

app/assets/javascripts/diff_notes/mixins/discussion.js

app/assets/javascripts/diff_notes/stores/comments.js

app/assets/javascripts/gl_dropdown.js

app/assets/javascripts/ide/stores/modules/commit/actions.js

app/assets/javascripts/issuable_bulk_update_actions.js

app/assets/javascripts/issue.js

app/assets/javascripts/label_manager.js