Support for Italian language and grammar

[mu22le]

Description

As the README currently states "Harper currently only supports English, but the core is extensible to support other language". This issues is meant to track the effort made and the work that is still required to add support for the Italian language and grammar.

Component

It is not clear to me which component of Harper this feature would affect. Probably the Core grammar checking engine (i.e. pull request #1152 waiting for comments for the Spanish language)

Use Cases

This would be useful to Italian users as well as other wishing to learn or improve their Italian.

Implementation Ideas

The rules, patterns, and data structures that would need to be detected have probably a lot in common with the other Romance languages (Spanish, French, Brazilian/Portuguese...).
There are certainly Italian resources available, but I am not familiar with them. What kind of resources were used to bootstrap the English grammar?

Existing Solutions

Both LanguageTool and Grammarly offer Italian support.

Additional Context

The main reason for this request is to have an issue to track progress (in the spirit of #1477 ) so that interested users can subscribe to it.

[github-actions]

This issue has been marked 'stale' due to lack of recent activity. If there is no further activity, the issue will be closed in another 30 days. Thank you for your contribution!

[github-actions]

This issue has been closed due to inactivity. If you feel this is in error, please reopen the issue or file a new issue with the relevant details.

[hippietrail]

In the meantime you can watch the progress of #2150 to see how Portuguese support is progressing. When it gets to a state that can be merged, adding Italian would be significantly easier