Add initial Microsoft Teams support

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

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

@@ -0,0 +1,41 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// OperationResult undocumented
+type OperationResult int
+
+const (
+	// OperationResultVSuccess undocumented
+	OperationResultVSuccess OperationResult = 0
+	// OperationResultVFailure undocumented
+	OperationResultVFailure OperationResult = 1
+	// OperationResultVTimeout undocumented
+	OperationResultVTimeout OperationResult = 2
+	// OperationResultVUnknownFutureValue undocumented
+	OperationResultVUnknownFutureValue OperationResult = 3
+)
+
+// OperationResultPSuccess returns a pointer to OperationResultVSuccess
+func OperationResultPSuccess() *OperationResult {
+	v := OperationResultVSuccess
+	return &v
+}
+
+// OperationResultPFailure returns a pointer to OperationResultVFailure
+func OperationResultPFailure() *OperationResult {
+	v := OperationResultVFailure
+	return &v
+}
+
+// OperationResultPTimeout returns a pointer to OperationResultVTimeout
+func OperationResultPTimeout() *OperationResult {
+	v := OperationResultVTimeout
+	return &v
+}
+
+// OperationResultPUnknownFutureValue returns a pointer to OperationResultVUnknownFutureValue
+func OperationResultPUnknownFutureValue() *OperationResult {
+	v := OperationResultVUnknownFutureValue
+	return &v
+}