Initial draft of profile metadata format & CLI (#17)

* Initial draft of profile metadata format

* Remove records, add Clippy to Nix, fix Clippy error

* Work on profile definition

* BREAKING: Make global settings consistent with profile settings

* Add builder methods & format

* Integrate launching with profiles

* Add profile loading

* Launching via profile, API tweaks, and yak shaving

* Incremental update, committing everything due to personal system maintainance

* Prepare for review cycle

* Remove reminents of experimental work

* CLI: allow people to override the non-empty directory check

* Fix mistake in previous commit

* Handle trailing whitespace and newlines in prompts

* Revamp prompt to use dialoguer and support defaults

* Make requested changes

theseus/examples/download-pack.rs

@@ -45,7 +45,9 @@ pub async fn main() {
     );
 
     let start = Instant::now();
-    fetch_modpack(&args.url, args.hash.as_deref(), &dest, ModpackSide::Client).await.unwrap();
+    fetch_modpack(&args.url, args.hash.as_deref(), &dest, ModpackSide::Client)
+        .await
+        .unwrap();
     let end = start.elapsed();
 
     println!("Download completed in {} seconds", end.as_secs_f32());