Create contribute guide prototype.

[Tatsu-syo]

I create contribute guide prototype to avoid confrict.
If you have some ideas, find problems, etc. please reply this pull request.

[mon-jai]

The sentence and grammar are not accurate here.

This is a rough fix from ChatGPT. Additional revisions are required for the "Release Process" section as well, I may do it tomorrow.

# How to Contribute

## Release Process

To avoid contamination and gather translations, follow these steps:

1. I or people who want to contribute should open an issue about the new version.
2. Whenever there's a trigger for release, such as new translations or a new code release, the process starts.
3. The review process, as described below, begins.
4. Once all review processes are complete and the software runs smoothly, I release it.
5. If no translations are available, I release the software without them.

## How to Include Translations

If you modify translations, you must follow this process.

### Via GitHub

1. Create a pull request.
2. Write a message about the pull request on the issue regarding the next version.
3. Review the pull request.
4. When an agreement is reached on the translations, I merge them into the master branch.

### Via Email

1. Send an email to me.
2. I will exchange GitHub usernames and authorship.
3. The process continues on GitHub.

## How to Merge Code

If you modify the program, you must follow this process.

1. Create a pull request.
2. Write a message about the pull request on the issue regarding the next version.
3. Review the pull request.
4. When an agreement is reached on the code changes, I merge them into the master branch.

[Tatsu-syo]

@mon-jai sorry to late response.
Please make corrections.
Thank you.