Add initial Microsoft Teams support

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

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

@@ -0,0 +1,13 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// CommsApplication undocumented
+type CommsApplication struct {
+	// Entity is the base model of CommsApplication
+	Entity
+	// Calls undocumented
+	Calls []Call `json:"calls,omitempty"`
+	// OnlineMeetings undocumented
+	OnlineMeetings []OnlineMeeting `json:"onlineMeetings,omitempty"`
+}