Add initial Microsoft Teams support

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

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

@@ -0,0 +1,33 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// ContentState undocumented
+type ContentState int
+
+const (
+	// ContentStateVRest undocumented
+	ContentStateVRest ContentState = 0
+	// ContentStateVMotion undocumented
+	ContentStateVMotion ContentState = 1
+	// ContentStateVUse undocumented
+	ContentStateVUse ContentState = 2
+)
+
+// ContentStatePRest returns a pointer to ContentStateVRest
+func ContentStatePRest() *ContentState {
+	v := ContentStateVRest
+	return &v
+}
+
+// ContentStatePMotion returns a pointer to ContentStateVMotion
+func ContentStatePMotion() *ContentState {
+	v := ContentStateVMotion
+	return &v
+}
+
+// ContentStatePUse returns a pointer to ContentStateVUse
+func ContentStatePUse() *ContentState {
+	v := ContentStateVUse
+	return &v
+}