Add initial Microsoft Teams support

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

vendor/github.com/yaegashi/msgraph.go/beta/OMASettingBase64Model.go

@@ -0,0 +1,13 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// OMASettingBase64 undocumented
+type OMASettingBase64 struct {
+	// OMASetting is the base model of OMASettingBase64
+	OMASetting
+	// FileName File name associated with the Value property (*.cer | *.crt | *.p7b | *.bin).
+	FileName *string `json:"fileName,omitempty"`
+	// Value Value. (Base64 encoded string)
+	Value *string `json:"value,omitempty"`
+}