Add interface to generate some doc out of

Signed-off-by: Knut-Erik Johnsen <abstract@knut-erik.org>

provider-models/crossplane-provider-upjet-azure/src/main/java/io/upbound/AzureProvider.java

@@ -0,0 +1,7 @@
+package io.upbound;
+
+/**
+ * This is the project for the upjet based Azure Provider.
+ */
+public interface AzureProvider {
+}