[Documentation]: Graphology JSON tutorial

### Issue Type

Documentation Suggestion

### Documentation Area

Gephi Lite - User Manual

### Description

It is not clear how to generate input data with thousands of nodes for use with Gephi Lite.

The import dialog https://lite.gephi.org/v1.0.2/ says that "GEXF, GRAPHML or Graphology JSON are supported" with no links to format examples.

The text could link to documentation https://docs.gephi.org/lite/user-manual/file-formats which doesn't have examples and doesn't mention Graphology JSON, but has a link to "Gephi Lite workspace" JSON schema.

Some quick tutorial would be nice to get started with generating the simple JSON (with Python) for use with Gephi Lite.

### Location (if applicable)

https://github.com/gephi/gephi-documentation/blob/master/gephi-lite/docs/user-manual/file-formats.md

https://github.com/gephi/gephi-lite/blob/d906a957a23bbc3ed02c70be34816313f4f304e6/packages/gephi-lite/src/locales/en.json#L332

### Additional Context

_No response_

Start with gephi-lite/docs/user-manual/file-formats.md and the referenced en.json entry; review the existing file-format wording and workspace JSON schema link. Done means the manual explains Graphology JSON with a small Python generation tutorial and provides examples or links that help users create large input data.

Written by the indexing model from the issue text.