add Redis cache and some clean up

- update and cleanup in README.md
- update getIdentity to throw response exception with 401 in JwtService
- update http files to use identity from env
- add cacheable to getIdentityFromDevice in DeviceRegistryService
- add RedisCacheConfiguration
- add CacheProperty
- set up cache property
- set up data redis cache

http/http-client.env.json

@@ -1,8 +1,10 @@
 {
-    "development": {
-        "hostname": "https://localhost:8443"
-    },
-    "docker": {
-        "hostname": "https://localhost:9000"
-    }
+  "development": {
+    "hostname": "https://localhost:8443",
+    "identity": "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+  },
+  "docker": {
+    "hostname": "https://localhost:9000",
+    "identity": "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+  }
 }