Add initial Microsoft Teams support

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

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

@@ -0,0 +1,17 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// WorkbookRangeBorder undocumented
+type WorkbookRangeBorder struct {
+	// Entity is the base model of WorkbookRangeBorder
+	Entity
+	// Color undocumented
+	Color *string `json:"color,omitempty"`
+	// SideIndex undocumented
+	SideIndex *string `json:"sideIndex,omitempty"`
+	// Style undocumented
+	Style *string `json:"style,omitempty"`
+	// Weight undocumented
+	Weight *string `json:"weight,omitempty"`
+}