Add initial Microsoft Teams support

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

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

@@ -0,0 +1,21 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// Participant undocumented
+type Participant struct {
+	// Entity is the base model of Participant
+	Entity
+	// Info undocumented
+	Info *ParticipantInfo `json:"info,omitempty"`
+	// RecordingInfo undocumented
+	RecordingInfo *RecordingInfo `json:"recordingInfo,omitempty"`
+	// MediaStreams undocumented
+	MediaStreams []MediaStream `json:"mediaStreams,omitempty"`
+	// Metadata undocumented
+	Metadata *string `json:"metadata,omitempty"`
+	// IsMuted undocumented
+	IsMuted *bool `json:"isMuted,omitempty"`
+	// IsInLobby undocumented
+	IsInLobby *bool `json:"isInLobby,omitempty"`
+}