Refactor Workflow Import components

[itisAliRH]

This PR refactors workflow import related components into CompositionAPI and typescript, imports icons and bootstrap components, and more logic improvements.

List of the changed files

• components/Workflow/WorkflowImport.vue
• components/Workflow/Import/FromFileOrUrl.test.ts
• components/Workflow/Import/FromFileOrUrl.vue
• components/Workflow/Import/TrsImport.vue
• components/Workflow/Import/TrsSearch.vue
• components/Workflow/Import/TrsServerSelection.vue
• components/Workflow/Import/TrsTool.vue
• components/Workflow/Import/TrsUrlImport.vue

How to test the changes?

(Select all options that apply)

• [ ] I've included appropriate automated tests.
• [x] 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

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