feat: support prefixing the domain to a GH link

Relates to #89

Author: WarningImHack3r

src/params/gh.ts

@@ -0,0 +1,3 @@
+export function match(param) {
+	return param.replace(/^https?:\/\//, "") === "github.com";
+}

src/routes/[...host=gh]/+page.server.ts

@@ -0,0 +1,6 @@
+import { redirect } from "@sveltejs/kit";
+import { resolve } from "$app/paths";
+
+export function load() {
+	redirect(308, resolve("/"));
+}

src/routes/[...host=gh]/[org]/+page.server.ts

@@ -0,0 +1,6 @@
+import { redirect } from "@sveltejs/kit";
+import { resolve } from "$app/paths";
+
+export function load() {
+	redirect(308, resolve("/"));
+}

src/routes/[...host=gh]/[org]/[repo]/+page.server.ts

@@ -0,0 +1,6 @@
+import { redirect } from "@sveltejs/kit";
+import { resolve } from "$app/paths";
+
+export function load() {
+	redirect(308, resolve("/"));
+}

src/routes/[...host=gh]/[org]/[repo]/[pid=pid]/+page.server.ts

@@ -0,0 +1,6 @@
+import { redirect } from "@sveltejs/kit";
+import { resolve } from "$app/paths";
+
+export function load() {
+	redirect(308, resolve("/"));
+}

src/routes/[...host=gh]/[org]/[repo]/[pid=pid]/[id=number]/+page.server.ts

@@ -0,0 +1,14 @@
+import { redirect } from "@sveltejs/kit";
+import { resolve } from "$app/paths";
+
+export function load({ params: { org, repo, pid, id } }) {
+	redirect(
+		307,
+		resolve("/[pid=pid]/[org]/[repo]/[id=number]", {
+			pid,
+			org,
+			repo,
+			id
+		})
+	);
+}