Started working on new plugin remake

[notangelmario]

Well, time to revive this project!

Fresh has finally implemented the ability for plugins to create routes, so this makes implementing fresh-seo look less like it's built with duct tape.

In my opinion we should keep the old functionality for backwards compatibility.

Other things to do:

• [x] Remove the import from the deno.json and put it in deps.ts (I put it there temporarily)
• [x] Implement glob matching in removing routes (see #22 )
• [x] Add route options to include option
• [x] Remove functionality to create setup in the old style

[notangelmario]

Oh yeah, I should've created the pull request as a draft but it is what it is.

include and exclude should also be an array of routes and options of those routes.

And yeah, the init process should be removed, but it shouldn't interfere with old setups.

[notangelmario]

Alright I think it's pretty much done. Anything to add?

[xstevenyung]

lfg! thx for the update, excited to finally have the plugin api implemented