Fix minors typos

[pkestene]

Add pre-commit hooks config and fix reported typos

This is a companion PR to the one made in libsc : cburstedde/libsc#229

This PR adds configuration files for using pre-commit, e.g.

• remove trailing white space,
• end of file fixer,
• spell checker (typos).

It can be run in command line terminal with pre-commit run --all-files (pre-commit is available either as a system package in Debian/Ubuntu or from a python package manager) . It could in principle be placed in a CI script, but it sometimes detects false positives (e.g. abbreviated variable names), so it is better to have a human eyes to cross-check.
False positives can be listed in _typos.toml so that they are ignored by the spell checker.

[cburstedde]

Thanks! If I run on Debian (bookworm) I get this:

pre-commit run --all-files
->

[INFO] Initializing environment for https://github.com/pre-commit/pre-commit-hooks.
An error has occurred: InvalidManifestError: 
==> File /media/sda7_crypt/helpor/.cache/pre-commit/repo7pvo0f4b/.pre-commit-hooks.yaml
==> At Hook(id='check-added-large-files')
==> At key: stages
==> At index 0
=====> Expected one of commit, commit-msg, manual, merge-commit, post-checkout, post-commit, post-merge, post-rewrite, prepare-commit-msg, push but got: 'pre-commit'
Check the log at /media/sda7_crypt/helpor/.cache/pre-commit/pre-commit.log

[pkestene]

I've just a ubuntu 24.04 at hand, and on my side when I run the command, everything is fine

 pkestene@home [fix-minors-typos → origin] ~/install/p4est/github/p4est % pre-commit run --all-files
check yaml...............................................................Passed
fix end of files.........................................................Passed
trim trailing whitespace.................................................Passed
check for added large files..............................................Passed
typos....................................................................Passed

I'm using pre-commit from the package manager, i.e. version 3.6.2 (no special python environment).

Also pre-commit itself is just a python script; which version of python are you using (from the system or third party like conda or like) ?

Can you just look at log to see what's wrong on your machine ?