Add identity struct, WIP implement token event

.env.example

@@ -0,0 +1,21 @@
+#Serve Http
+PORT=7123
+HOST=127.0.0.1
+
+#PostgreSQL
+DB_HOST=localhost
+DB_USER=postgres
+#DB_PASSWORD=strongpass
+#DB_NAME=urdt_ussd
+DB_NAME=visedb3
+DB_PORT=5432
+DB_SSLMODE=disable
+DB_TIMEZONE=Africa/Nairobi
+#DB_SCHEMA=vvise
+
+#External API Calls
+#CREATE_ACCOUNT_URL=/api/account/create
+#TRACK_STATUS_URL=/api/track/
+#BALANCE_URL=/api/account/status/
+#CUSTODIAL_URL_BASE=http://localhost:5003
+#DATA_URL_BASE=http://localhost:5006