feat(corp/rih): add macro to render Markdown->yew::Html statically

This makes it possible to embed long texts from Markdown files instead
of dealing with writing the weird HTML-tags inside the yew macros,
which will be much easier for content editors to deal with.

Change-Id: Idc4e67404fcfe2b8d5083cf556df1c701ba17660
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8648
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI

corp/rih/src/main.rs

@@ -5,6 +5,7 @@ use gloo::storage::{LocalStorage, Storage};
 use rand::seq::IteratorRandom;
 use rand::thread_rng;
 use serde::{Deserialize, Serialize};
+use static_markdown::markdown;
 use std::collections::BTreeSet;
 use wasm_bindgen::closure::Closure;
 use wasm_bindgen::JsCast;