Fahreza/context menu update

[MFA-X-AI]

Description

This PR introduces significant updates to the Xircuits context, enhancing both the workflow canvas and the tray widget.

Workflow Canvas Context Menu Improvements:

The right-click context menu for the workflow canvas has been refined. The available options now dynamically adjust based on the selected entity or entities. The table below summarizes the available options:

	Canvas (No Entities)	Node	Nodes	Parameter Node	Link	Links
Cut	x	x	x	x	x	x
Copy	x	x	x	x	x	x
Paste	x	x	x	x	x	x
Reload Node		x	x
Edit				x
Open Script		x
Delete		x	x	x	x	x
Undo	x
Redo	x
Add Comment	x

Tray Widget Context Window:

The tray widget now features a new context menu, which interacts with a new jupyter server endpoint handling library-related requests. The menu provides the following options:

1. Install - Install the Xircuits component library from the library's requirement.txt.
2. Show in File Explorer - Reveal component library in the Jupyter file explorer.
3. See Readme - Search for a readme.md file in the component library directory.
4. Show Example - Open a .xircuits canvas based on a set search logic.

Refactoring and Organizational Changes:

This PR also addresses file organization and naming consistency. Files have been renamed and sorted into appropriate folders to maintain a consistent naming scheme across the project. This includes updating the locations and names of example files and readmes for all internal component libraries.

References

Issue #264

Pull Request Type

• Xircuits Core (Jupyterlab Related changes)
• Xircuits Canvas (Custom RD Related changes)
• Xircuits Component Library
• Xircuits Project Template
• Testing Automation
• Documentation
• Others (Improvements in workflow and context menu)

Type of Change

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Tests

1. Test Updated Canvas Context Window
- Ensure that the spawned options are correct based on the appearance table.

2. Test Tray Widget Component Library
- Verify that the component library gets installed correctly.
- Test the 'Show in File Explorer' option to ensure it reveals the component library in the Jupyter file explorer.
- Test the 'See Readme' option to confirm that Xircuits correctly searches and displays a readme.md file from the component library directory.
- Test the 'Show Example' feature and confirms that it opens a .xircuits canvas, if it exists.

Tested on?

• Windows
• Linux Ubuntu
• Centos
• Mac
• Others (State here -> xxx )