Add initial Microsoft Teams support

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

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

@@ -0,0 +1,23 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+import "time"
+
+// SkypeForBusinessActivityUserCounts undocumented
+type SkypeForBusinessActivityUserCounts struct {
+	// Entity is the base model of SkypeForBusinessActivityUserCounts
+	Entity
+	// PeerToPeer undocumented
+	PeerToPeer *int `json:"peerToPeer,omitempty"`
+	// Organized undocumented
+	Organized *int `json:"organized,omitempty"`
+	// Participated undocumented
+	Participated *int `json:"participated,omitempty"`
+	// ReportRefreshDate undocumented
+	ReportRefreshDate *time.Time `json:"reportRefreshDate,omitempty"`
+	// ReportDate undocumented
+	ReportDate *time.Time `json:"reportDate,omitempty"`
+	// ReportPeriod undocumented
+	ReportPeriod *string `json:"reportPeriod,omitempty"`
+}