refactor: Forms 1533 bulk upload separation

[jasonchung1871]

Description

This pull request puts us closer to utilizing tree-shaking that Vue 3 provides. It also adds fills some of our technical debt in regards to testing for the front end. This separates the bulk upload functionality found in the FormViewer out into the FormViewerMultiUpload file where it should have been originally. This reduces the complexity of FormViewer since the bulk upload wasn't necessary for it to work. This also converts the FormViewerMultiUpload file from the options API to the composition API.

Summary: The code for bulk upload has been removed from FormViewer and placed into FormViewerMultiUpload. There were some minor changes like variable names or function names, just to make things clearer, and added comments. The delay function was moved out into a composable function so that it could be mocked in the test. Options API to composition API changes are changes made in how a variable is accessed, going from this.variable = 0 to variable.value = 0.

Type of Change

refactor (change to improve code quality)

test (add missing tests or correct existing tests)

Checklist

• I have read the CONTRIBUTING doc
• I have checked that unit tests pass locally with my changes
• I have run the npm script lint on the frontend and backend
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• I have approval from the product owner for the contribution in this pull request

Further comments

[github-actions]

Release de7389e deployed at https://chefs-dev.apps.silver.devops.gov.bc.ca/pr-1528