docs: partially document codebase

Should make it easier for frontend to figure out what stuff actually does, more will be added as the project goes on

src/api/versions.rs

@@ -1,3 +1,4 @@
+//! `/api/v1/versions` Returns info about api versions
 use actix_web::{HttpResponse, Responder, get};
 use serde::Serialize;
 
@@ -10,8 +11,21 @@ struct Response {
 #[derive(Serialize)]
 struct UnstableFeatures;
 
+/// `GET /api/versions` Returns info about api versions.
+/// 
+/// requires auth: no
+/// 
+/// ### Response Example
+/// ```
+/// json!({
+///     "unstable_features": {},
+///     "versions": [
+///         "1"
+///     ]
+/// });
+/// ```
 #[get("/versions")]
-pub async fn res() -> impl Responder {
+pub async fn get() -> impl Responder {
     let response = Response {
         unstable_features: UnstableFeatures,
         // TODO: Find a way to dynamically update this possibly?