refactor(cli)!: Moved CLI stuff to crate::cli

- Bump version to 0.4.0
- Added Config::try_load
- Added Config.verbose field
- Made Config.path public
- Added -q/--quiet flag to CLI

BREAKING CHANGE: Moved CLI-related objects to squad-quest-cli::cli

Cargo.lock

@@ -332,7 +332,7 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
 [[package]]
 name = "squad-quest"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "serde",
  "toml",
@@ -340,7 +340,7 @@ dependencies = [
 
 [[package]]
 name = "squad-quest-cli"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "chrono",
  "clap",