Add `codespell` to check for spelling mistakes

### Search before asking

- [x] I searched in the [issues](https://github.com/apache/fluss/issues) and found nothing similar.

### Motivation

`codespell` is a Python Package https://pypi.org/project/codespell/

A popular tool to find typos https://github.com/codespell-project/codespell

So I have a quick one liner to summarize the results from `codespell`:

```
fluss$ codespell | cut -f2 -d' ' | tr A-Z a-z | sort | uniq -c | sort -nr
70 afterall
20 notin
11 ois
6 thirdparty
6 ot
6 bais
6 alls
5 commiter
4 whiling
4 visitin
4 stati
4 errorprone
3 timout
3 mor
3 abd
2 ture
2 ser
2 manger
2 fot
2 fom
2 3nd
1 wth
1 wil
1 usera
1 unknonwn
1 transfered
1 theses
1 testin
1 re-using
1 re-use
1 resourecs
1 plugable
1 parition
1 ony
1 oder
1 notificatios
1 notifacations
1 metics
1 implementors
1 hava
1 handel
1 covert
1 build-in
1 assigment
```

### Solution

_No response_

### Anything else?

_No response_

### Willingness to contribute

- [x] I'm willing to submit a PR!

Start with the repository's existing build and CI configuration to find where a codespell check should run. Run the reported codespell command to review current findings and identify valid terms that need handling. Done means spelling checks run through the project workflow without inappropriate failures.

Written by the indexing model from the issue text.