roles: sql, crate, struct, id, rocket id, list page

crates/database/migrations/20230506170211_roles.up.sql

@@ -0,0 +1,7 @@
+create table if not exists roles
+(
+    name        TEXT    not null primary key,
+    label       TEXT    not null,
+    created_at  TEXT    not null default CURRENT_TIMESTAMP,
+    is_archived INTEGER not null default 0
+);