Add initial Microsoft Teams support

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

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

@@ -0,0 +1,11 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// BusinessFlowSettings undocumented
+type BusinessFlowSettings struct {
+	// AccessReviewSettings is the base model of BusinessFlowSettings
+	AccessReviewSettings
+	// DurationInDays undocumented
+	DurationInDays *int `json:"durationInDays,omitempty"`
+}