Add initial Microsoft Teams support

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

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

@@ -0,0 +1,13 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// DateTimeTimeZone undocumented
+type DateTimeTimeZone struct {
+	// Object is the base model of DateTimeTimeZone
+	Object
+	// DateTime undocumented
+	DateTime *string `json:"dateTime,omitempty"`
+	// TimeZone undocumented
+	TimeZone *string `json:"timeZone,omitempty"`
+}