Fix 5: Allow backward-compatibility and add plugin-template-v2

docs/plugin-template-v2/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "plugin-template-v2"
+version = "0.1.0"
+edition = "2021"
+description = "Example OpenCAD Studio plugin demonstrating the shared-memory DocumentReader API."
+license = "GPL-3.0-only"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+ocs_plugin_api = { path = "../../crates/ocs_plugin_api", features = ["host"] }
+acadrust = "0.3.4"