Add initial Microsoft Teams support

Documentation on https://github.com/42wim/matterbridge/wiki/MS-Teams-setup

vendor/github.com/yaegashi/msgraph.go/beta/IdentityUserRiskModel.go

@@ -0,0 +1,15 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+import "time"
+
+// IdentityUserRisk undocumented
+type IdentityUserRisk struct {
+	// Object is the base model of IdentityUserRisk
+	Object
+	// Level undocumented
+	Level *UserRiskLevel `json:"level,omitempty"`
+	// LastChangedDateTime undocumented
+	LastChangedDateTime *time.Time `json:"lastChangedDateTime,omitempty"`
+}