Add end of string modifier to build/serve ui regex #1629
Description
What problem does this feature solve?
The match regex in @vue/cli-ui/ui-defaults/tasks.js doesn't have an end of string modifier at the end of it ($). This means it matches vue-cli-service build:electron or something else similar. Since these defaults overwrite plugin ui config, this prevents developers like me for making their plugin work with the ui.
What does the proposed API look like?
Add $ to the end of the match regex for the build/serve commands. Created pr #1630 which does exactly this.