add saml cache provider

GitOrigin-RevId: ad9f3e81da37bd932822f13db441ce8afc342eea

services/web/app/src/models/SamlCache.js

@@ -0,0 +1,15 @@
+const mongoose = require('../infrastructure/Mongoose')
+const { Schema } = mongoose
+
+const SamlCacheSchema = new Schema(
+  {
+    createdAt: { type: Date },
+    requestId: { type: String }
+  },
+  {
+    collection: 'samlCache'
+  }
+)
+
+exports.SamlCache = mongoose.model('SamlCache', SamlCacheSchema)
+exports.SamlCacheSchema = SamlCacheSchema