Misc improvements and fixes (#109)

* now utilizing tracing better

* better tracing

* fix mac vs pc oppositional env var issue

* modified loading package

* added droppable loadingbarid that sends completion message

* loading bar

* regressed bug on mac

* fixed non-updated loading bar on playground

* Loading bar improvements

---------

Co-authored-by: Jai A <jaiagr+gpg@pm.me>

theseus_gui/src-tauri/src/main.rs

@@ -5,7 +5,11 @@
 
 use theseus::prelude::*;
 
+use tracing_error::ErrorLayer;
+use tracing_subscriber::EnvFilter;
+
 mod api;
+mod error;
 
 // Should be called in launcher initialization
 #[tauri::command]
@@ -37,7 +41,34 @@ async fn should_disable_mouseover() -> bool {
     false
 }
 
+use tracing_subscriber::prelude::*;
+
 fn main() {
+    /*
+       tracing is set basd on the environment variable RUST_LOG=xxx, depending on the amount of logs to show
+           ERROR > WARN > INFO > DEBUG > TRACE
+       eg. RUST_LOG=info will show info, warn, and error logs
+           RUST_LOG="theseus=trace" will show *all* messages but from theseus only (and not dependencies using similar crates)
+           RUST_LOG="theseus=trace" will show *all* messages but from theseus only (and not dependencies using similar crates)
+
+       Error messages returned to Tauri will display as traced error logs if they return an error.
+       This will also include an attached span trace if the error is from a tracing error, and the level is set to info, debug, or trace
+
+       on unix:
+           RUST_LOG="theseus=trace" {run command}
+
+    */
+    let filter = EnvFilter::try_from_default_env()
+        .unwrap_or_else(|_| EnvFilter::new("theseus=info"));
+
+    let subscriber = tracing_subscriber::registry()
+        .with(tracing_subscriber::fmt::layer())
+        .with(filter)
+        .with(ErrorLayer::default());
+
+    tracing::subscriber::set_global_default(subscriber)
+        .expect("setting default subscriber failed");
+
     tauri::Builder::default()
         .invoke_handler(tauri::generate_handler![
             initialize_state,