docs: add support for getters (and setters) on class

[vintheweirdass]

On our package https://jsr.io/@dunno/jsr-registry-bindings (specifically on the main file https://github.com/teamdunno/jsr-registry-bindings/blob/main/mod.ts#L155), the getters that I coded here

doesn't get displayed on the docs, only shows the private variables that I used for the getters

But on vscode (or any other ide), the getters showed up

[lucacasonato]

I can see the getter as an readonly property here: https://jsr.io/@dunno/jsr-registry-bindings/doc/~/Package#accessor_firstfetch

This page however lists the getter as a method: https://jsr.io/@dunno/jsr-registry-bindings/doc/~/Package.prototype.firstFetch. This is a bug, and is tracked here: denoland/deno_doc#666

[vintheweirdass]

Alright thanks! Im going to close this issue for now

[vintheweirdass]

(For future readers) The bug is being tracked here => denoland/deno_doc#666