initialize core structure

Signed-off-by: Onur Özkan <work@onurozkan.dev>

Cargo.toml

@@ -0,0 +1,12 @@
+[workspace]
+members = [
+    "kaptan-runtime",
+]
+resolver = "2"
+
+[workspace.package]
+version = "0.1.0"
+edition = "2024"
+license = "AGPL-3.0-only"
+repository = "https://github.com/Orkavian/kaptan"
+rust-version = "1.90"