Add method of storing launcher data, fix forge 1.17+, add launcher settings

theseus/src/data/mod.rs

@@ -0,0 +1,22 @@
+use std::io;
+
+pub use meta::Metadata;
+pub use settings::Settings;
+
+mod meta;
+mod settings;
+
+#[derive(thiserror::Error, Debug)]
+pub enum DataError {
+    #[error("I/O error while reading data: {0}")]
+    IOError(#[from] io::Error),
+
+    #[error("Daedalus error: {0}")]
+    DaedalusError(#[from] daedalus::Error),
+
+    #[error("Attempted to access {0} without initializing it!")]
+    InitializedError(String),
+
+    #[error("Error while serializing/deserializing data")]
+    SerdeError(#[from] serde_json::Error),
+}