Add the derive proc macro

simconnect-sdk-derive/tests/run.rs

@@ -0,0 +1,8 @@
+#[test]
+fn tests() {
+    let t = trybuild::TestCases::new();
+    t.pass("tests/01-parse.rs");
+    t.compile_fail("tests/02-struct-attr-errors.rs");
+    t.compile_fail("tests/03-field-attr-errors.rs");
+    t.compile_fail("tests/04-invalid-values.rs");
+}