Add Project Mode: Manage Multi-file Projects and File Tree

[InMDev]

Feature Request: Project Mode

Overview:
Add a "Project Mode" that enables users to open and manage an entire folder/project, supporting workflows involving multiple files, images, and relative paths. This improvement will make it easier to work on larger LaTeX projects using \input and \include commands and assets like images.

Proposed Features:

• Ability to open an entire folder as a "project".
• File tree view in the sidebar for navigating all files in the project (including subfolders).
• Integrated search across the project folder/files.
• Management of multi-file LaTeX projects (\input and \include commands).
• Support for assets such as images and keeping relative paths correct in output.
• Basic project operations: add, rename, move, or delete files within the tree.
• Intuitive selection or setting of main/root TeX file for build & preview.

Benefits:

• Simplifies editing for complex documents with multiple chapters, appendices, and asset folders.
• Reduces path issues for images and included files.
• Competitive with desktop LaTeX editors supporting project/folder mode.

Context:
This feature is aimed at improving support for real-world LaTeX projects beyond single-file editing.