Add reverse proxy endpoint

src/handlers/mod.rs

@@ -18,8 +18,9 @@ async fn docs() -> &'static str {
     dedent!(
         "
         Welcome to Nyeki's API! This is a tiny API I built to provide some basic information I
-        found myself needing in more than one place. This at the moment only includes Discord and
-        GitHub profiles, but I may add more stuff as I see myself needing it.
+        found myself needing in more than one place. This at the moment only includes Discord
+        profiles, GitHub profiles, and a reverse proxy, but I may add more stuff as I see myself
+        needing it.
 
         The API is versioned, so API endpoints will always be prefixed with `/v{version}`. The
         current version is 1 (i.e. stuff is prefixed by `/v1`). All responses are JSON (or
@@ -88,6 +89,15 @@ async fn docs() -> &'static str {
                             for supported sources).
                 - `source`: The source of the profile (either `discord` or `github`).
 
+            GET /v1/proxy
+                Proxies a request to the given URL.
+
+                Note that headers are not forwarded and neither is the request body. This is a
+                simple GET proxy.
+
+                Query parameters:
+                - `url`: The URL to proxy the request to.
+
         They all take 2 query parameters: `id` and `source`. The `id` is the ID of the user you
         want to get the profile of, and the `source` is the source of the profile. The source can
         be either `discord` or `github`.