feat: add One Time Secret template (#79)

* feat: added one time secret template

* fix: updated meta.json and added svg

* chore: remove hardcoded variables

blueprints/onetimesecret/template.toml

@@ -0,0 +1,15 @@
+[variables]
+main_domain = "${domain}"
+secret = "${password:30}"
+redis_password = "${password:30}"
+
+[[config.domains]]
+serviceName = "onetimesecret"
+port = 3000
+host = "${main_domain}"
+
+[config.env]
+COLONEL="admin@example.com"
+HOST="${main_domain}"
+REDIS_PASSWORD = "${redis_password}"
+SECRET="${secret}"