Add initial Microsoft Teams support

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

vendor/github.com/yaegashi/msgraph.go/beta/IPv4RangeModel.go

@@ -0,0 +1,13 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// IPv4Range undocumented
+type IPv4Range struct {
+	// IPRange is the base model of IPv4Range
+	IPRange
+	// LowerAddress Lower address.
+	LowerAddress *string `json:"lowerAddress,omitempty"`
+	// UpperAddress Upper address.
+	UpperAddress *string `json:"upperAddress,omitempty"`
+}