feat: add logto oauth connector

[loickal]

Adds Logto as an oAuth Connector

[loickal]

Let me know if I have to edit something. A quick merge would be cool so that I can start finish building my app :)

[vacijj]

@loickal I fully agree with adding a logto connector to nuxt-auth-utils. I'm just currios and was wondering why you don't use @logto/nuxt.

Using the PR for my question might not be the appropriate channel. If so, I appologize.

[atinux]

I kind of agree, why not using the @logto/nuxt module for it?

[alexandre-hallaine]

Adding my support for this PR. I think having the Logto connector directly within nuxt-auth-utils is the right move. It centralizes our authentication tools, which is much more efficient than needing separate modules for each provider.