Add initial Microsoft Teams support

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

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

@@ -0,0 +1,21 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// AddWatermarkAction undocumented
+type AddWatermarkAction struct {
+	// InformationProtectionAction is the base model of AddWatermarkAction
+	InformationProtectionAction
+	// UIElementName undocumented
+	UIElementName *string `json:"uiElementName,omitempty"`
+	// Layout undocumented
+	Layout *WatermarkLayout `json:"layout,omitempty"`
+	// Text undocumented
+	Text *string `json:"text,omitempty"`
+	// FontName undocumented
+	FontName *string `json:"fontName,omitempty"`
+	// FontSize undocumented
+	FontSize *int `json:"fontSize,omitempty"`
+	// FontColor undocumented
+	FontColor *string `json:"fontColor,omitempty"`
+}