[docs] [ci] automatically re-generate parameter docs via pre-commit

[jameslamb]

This project uses a script to auto-generate https://lightgbm.readthedocs.io/en/latest/Parameters.html from comments in https://github.com/microsoft/LightGBM/blob/master/include/LightGBM/config.h

To check that that's been done, we have some code that manually checks specific files with diff

LightGBM/.ci/test.sh

Lines 142 to 147 in 97ff708

	# check the consistency of parameters' descriptions and other stuff
	cp ./docs/Parameters.rst ./docs/Parameters-backup.rst
	cp ./src/io/config_auto.cpp ./src/io/config_auto-backup.cpp
	python ./.ci/parameter-generator.py || exit 1
	diff ./docs/Parameters-backup.rst ./docs/Parameters.rst || exit 1
	diff ./src/io/config_auto-backup.cpp ./src/io/config_auto.cpp || exit 1

This is often missed and has to be taught to new contributors, for example: #6863 (review)

To help simplify CI scripts and hopefully reduce friction for contributors, this proposes automatically re-running that via pre-commit.

(thanks to my colleague @KyleFromNVIDIA for introducing me to this pattern)

Notes for Reviewers

How I tested this

Changed a comment in config.h, ran pre-commit run --all-files, and saw pre-commit fail (exit code 1) like this:

regenerate-parameters....................................................Failed
- hook id: regenerate-parameters
- files were modified by this hook

[StrikerRUS]

Wow, awesome change, thanks a lot!