Add initial Microsoft Teams support

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

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

@@ -0,0 +1,15 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// CustomTimeZone undocumented
+type CustomTimeZone struct {
+	// TimeZoneBase is the base model of CustomTimeZone
+	TimeZoneBase
+	// Bias undocumented
+	Bias *int `json:"bias,omitempty"`
+	// StandardOffset undocumented
+	StandardOffset *StandardTimeZoneOffset `json:"standardOffset,omitempty"`
+	// DaylightOffset undocumented
+	DaylightOffset *DaylightTimeZoneOffset `json:"daylightOffset,omitempty"`
+}