Add initial Microsoft Teams support

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

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

@@ -0,0 +1,23 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+import "time"
+
+// MeetingActivityStatistics undocumented
+type MeetingActivityStatistics struct {
+	// ActivityStatistics is the base model of MeetingActivityStatistics
+	ActivityStatistics
+	// AfterHours undocumented
+	AfterHours *time.Duration `json:"afterHours,omitempty"`
+	// Organized undocumented
+	Organized *time.Duration `json:"organized,omitempty"`
+	// Recurring undocumented
+	Recurring *time.Duration `json:"recurring,omitempty"`
+	// Long undocumented
+	Long *time.Duration `json:"long,omitempty"`
+	// Conflicting undocumented
+	Conflicting *time.Duration `json:"conflicting,omitempty"`
+	// Multitasking undocumented
+	Multitasking *time.Duration `json:"multitasking,omitempty"`
+}