Use Ructe (#327)

All the template are now compiled at compile-time with the `ructe` crate.

I preferred to use it instead of askama because it allows more complex Rust expressions, where askama only supports a small subset of expressions and doesn't allow them everywhere (for instance, `{{ macro!() | filter }}` would result in a parsing error).

The diff is quite huge, but there is normally no changes in functionality.

Fixes #161 and unblocks #110 and #273

templates/users/followers.rs.html

@@ -0,0 +1,24 @@
+@use templates::{base, users::header};
+@use template_utils::*;
+@use plume_models::users::User;
+
+@(ctx: BaseContext, user: User, follows: bool, is_remote: bool, remote_url: String, followers: Vec<User>, page: i32, n_pages: i32)
+
+@:base(ctx, &i18n!(ctx.1, "{0}'s followers"; user.name(ctx.0)), {}, {}, {
+    @:header(ctx, &user, follows, is_remote, remote_url)
+
+    @tabs(&[
+        (&format!("/@/{}", user.get_fqn(ctx.0)), i18n!(ctx.1, "Articles"), false),
+        (&format!("/@/{}/followers", user.get_fqn(ctx.0)), i18n!(ctx.1, "Followers"), true)
+    ])
+
+    <div class="cards">
+        @for follower in followers {
+            <div class="card">
+                <h3><a href="/@@/@follower.get_fqn(ctx.0)/">@follower.name(ctx.0)</a> <small>@format!("@{}", follower.get_fqn(ctx.0))</small></h3>
+                <main><p>@Html(follower.summary)</p></main>
+            </div>
+        }
+    </div>
+    @paginate(ctx.1, page, n_pages)
+})