feat!: Added limit field to quests

- Bump version to 0.12.0
- lib: Changed Quest::complete_for_account behavior
- cli: Added limit field for quest create and quest update
- discord: Quests are checked for limit on /answer
- discord: Added limit field for /quest create and /quest update
- discord: Changed behavior of fetch_or_init_account

Cargo.toml

@@ -2,7 +2,7 @@
 members = ["cli", "discord"]
 
 [workspace.package]
-version = "0.11.0"
+version = "0.12.0"
 edition = "2024"
 repository = "https://2ndbeam.ru/git/2ndbeam/squad-quest"
 homepage = "https://2ndbeam.ru/git/2ndbeam/squad-quest"