Add keycloak.json file (#1)

Author: VaishSiddharth

omod/src/main/resources/smart-keycloak.json

@@ -0,0 +1,8 @@
+{
+  "realm": "openmrs",
+  "auth-server-url": "http://localhost:8180/auth/",
+  "ssl-required": "external",
+  "resource": "smartClient",
+  "public-client": true,
+  "confidential-port": 0
+}