Code Refactor - HTML Strings in JS Files

[gokulprathin8]

What is this PR about?

Move all HTML strings in JavaScript files to a separate HTML file with a templating library for better management and less confusion.

Some of the files that needs to be refactored are:

• [ ] gw.workflow.js
• [ ] gw.ssh.js
• [ ] gw.host.js
• [ ] gw.menu.js
• [ ] gw.process.js
• [ ] gw.user.js
• [ ] gw.workspace.js

There might be more files, please add them here if you think the list is incomplete.

What needs to be done?

• Refactor existing JavaScript code to remove inline HTML strings.
• Organize HTML content into template files using Thymeleaf, ensuring that dynamic content is properly managed through Thymeleaf's syntax.
• Test the refactored code extensively to ensure that the UI rendering behaves as expected without regressions.

P.S application.properties already has thyme-leaf configured, we just need to use it.

Expected Outcome

JS and HTML are sperated to a good extent. Making it easy to build features on top of existing codebase easy and efficient.