Wpwatcher

Add options `--show_html` and `--show_json`

Fix compatibility with `filelock>=3.12.0`.

Use the latest `wpscan_out_parse` package, fix bug.

Fix import to use the latest `wpscan_out_parse` package.
Fix the `email_resend_after` option.

Now fully typed with annotations and checked with mypy.
Use f-strings everywhere.
Use readthedocs to host the documentation.
Make logo with some random images
Structural changes in order to tackle 22.

New :
- 45 add Warning: This issue is unfixed since {date} when an issue has not been fixed.
- Print Fixed issue to terminal, not just in emails.