add isx-gui-visualization step

[Naza26]

Merge Request

Description

This PR introduces a new ISX GUI Visualization pipeline step that generates Inscopix .isxp project files from processed multi-plane recordings. Changes were adapted from this working method CGK Lab already had in place.

• New ISX Gui Visualization pipeline step
  • Generates one .isxp project per original video
  • Correctly groups multi-plane DFF, cellsets, and event detections
  • Creates the required sibling _data folder to match Inscopix requirements
  • Uses JSON templates (prj_template.json, single_plane_template.json) to match Inscopix project format

Relevant notes on code adaptation to work with our pipeline:

• Plane files are grouped by pipeline ids (one per original recording)
• Plane order is explicitly sorted to ensure:
  • stable output across runs
  • correct DFF / cellset / event alignment
• Use of Path instead of file system base_path to ensure consistency in slashes normalizations among different OS

Type of change

• Bug fix
• New feature
• Documentation update
• Refactor
• Other (specify)