Libraries Modernisation: Directory Dataset Picker

[itisAliRH]

This PR is a follow-up on #18518 and replaces the old dataset picker from user and import directories and path to the library folder. Also, remove the jstree and related files (related #18451)

How to test the changes?

(Select all options that apply)

• [ ] I've included appropriate automated tests.
• [ ] This is a refactoring of components with existing test coverage.
• [x] Instructions for manual testing are as follows:
  1. Open a library in Data Libraries
  2. Import file or folder from Dataset > User directory or from Dataset > from import directory Dataset > from path as admin
  3. Select files or folders or past paths to enter

License

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