Convert /pathogens to App Router

[genehack]

Context

This is part of the Convert static-site from Pages Router to App Router work. See there for additional context.

The /pathogens page uses only the GenericPage and ListResources components.

The GenericPage component is a simple bit of HTML and will be trivial to convert.

ListResources is a fairly massive component that uses some client-side state. On the plus side, it depends on very few things outside itself, and it has already been rewritten in Typescript (albeit, still making extensive use of Styled Components). Converting this component over is expected to be the bulk of the work.

[victorlin]

I have some ListResources TypeScript work that I plan to make a PR for soon. Hopefully the app router work can wait for that.

[genehack]

I have some ListResources TypeScript work that I plan to make a PR for soon. Hopefully the app router work can wait for that.

yeah, i'm gonna jump back into the blog PR and deal with the redirect issue there before i pick this back up — yesterday i got right to the point where i was gonna touch ListResources and ran out of day, so once that other PR is merged, i can rebase my WIP on top of it.

[victorlin]

PR for the TypeScript work: #1073