Add composable confirmation dialog

[davelopez]

Similar to #14935, this adds a wrapper for the Bootstrap modal confirmation message box ($bvModal.msgBoxConfirm) that can be used in composition API.

Usage example:

<script setup>
import { useConfirmDialog } from "composables/confirmDialog";

const { confirm } = useConfirmDialog();

async function doThingOnConfirm() {
  const confirmed = await confirm(`Are you 120% sure?`, { okVariant: "danger" });
  if (confirmed) {
    // Do the thing
  }
}
</script>

Required for #14839

How to test the changes?

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[github-actions]

This PR was merged without a "kind/" label, please correct.

[davelopez]

Thanks for the review and merge!