add repo & version yml

repository.yml

@@ -0,0 +1,6 @@
+repo.name: tinyusb
+repo.versions:
+    "0.0.0": "master"
+    "0.0.1": "develop"
+
+    "0-dev": "0.0.1"

version.yml

@@ -0,0 +1,3 @@
+# Newt uses this file to determine the version of a checked out repo.
+# This should always be 0.0.0 in the master branch.
+repo.version: 0.0.0