init wgpu + doc + err robustes

examples/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "examples"
+name = "wsg-examples"
 version = "0.1.0"
 edition = "2024"
 

examples/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    todo!("later");
+}