feat(plugins): neotest integration

[igorlfs]

Hello!

This is just a simple integration with neotest. More specifically, it's summary. Currently, when the plugin tries to restore neotest's summary, an error is thrown. The integration fixes this issue, by using a workaround similar to dapui's: first calling close() and then calling open(). Neotest also provides others "views", such as the output panel, but I don't use them, so I can't say if they're causing trouble as of now, but I can take a look if you don't wanna merge an "incomplete" PR

[jedrzejboczar]

Thanks! I'm not using neotest myself but this looks good to me. I think we can merge only with the "summary" view and possible improve later if needed.