feat(io): add read_file/write_file commands and dialog capability

src-tauri/src/project.rs

@@ -0,0 +1,11 @@
+use std::fs;
+
+#[tauri::command]
+pub fn read_file(path: String) -> Result<String, String> {
+    fs::read_to_string(&path).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub fn write_file(path: String, contents: String) -> Result<(), String> {
+    fs::write(&path, contents).map_err(|e| e.to_string())
+}