refactor!: Moved CLI to inner package

- Increased version to 0.3.0
- Repository now is a Cargo workspace
- Added squad-quest-cli package
- Removed CLI-specific dependencies from main crate
- Removed bin target from main package

Cargo.lock

@@ -332,12 +332,20 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
 [[package]]
 name = "squad-quest"
-version = "0.2.0"
+version = "0.3.0"
+dependencies = [
+ "serde",
+ "toml",
+]
+
+[[package]]
+name = "squad-quest-cli"
+version = "0.3.0"
 dependencies = [
  "chrono",
  "clap",
- "clap_derive",
  "serde",
+ "squad-quest",
  "toml",
 ]