Add initial Microsoft Teams support

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

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

@@ -0,0 +1,11 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// BookingPerson Represents a booking customer or staff member.
+type BookingPerson struct {
+	// BookingNamedEntity is the base model of BookingPerson
+	BookingNamedEntity
+	// EmailAddress The e-mail address of this person.
+	EmailAddress *string `json:"emailAddress,omitempty"`
+}