added settings API + fixed bug (#62)

* added settings API + fixed bug

* removed redundant API funcs

* comment clarifications

---------

Co-authored-by: Wyatt <wyatt@modrinth.com>

theseus/src/api/settings.rs

@@ -0,0 +1,24 @@
+//! Theseus profile management interface
+pub use crate::{
+    state::{
+        Hooks, JavaSettings, MemorySettings, Profile, Settings, WindowSize,
+    },
+    State,
+};
+
+/// Gets entire settings
+#[tracing::instrument]
+pub async fn get() -> crate::Result<Settings> {
+    let state = State::get().await?;
+    let settings = state.settings.read().await;
+    Ok(settings.clone())
+}
+
+/// Sets entire settings
+#[tracing::instrument]
+pub async fn set(settings: Settings) -> crate::Result<()> {
+    let state = State::get().await?;
+    // Replaces the settings struct in the RwLock with the passed argument
+    *state.settings.write().await = settings;
+    Ok(())
+}