apps: sql + get valid one, get by id, insert, generate app id, generate secret

crates/database/queries/apps/get_one.sql

@@ -0,0 +1,13 @@
+select id,
+       created_at      as "created_at: DateTime<Utc>",
+       updated_at      as "updated_at: DateTime<Utc>",
+       label,
+       redirect_uri,
+       secret,
+       is_confidential as "is_confidential: bool",
+       is_archived     as "is_archived: bool"
+from apps
+
+where id is (?)
+  and redirect_uri is (?)
+  and is_archived is 0