Add initial Microsoft Teams support

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

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

@@ -0,0 +1,19 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// TextColumn undocumented
+type TextColumn struct {
+	// Object is the base model of TextColumn
+	Object
+	// AllowMultipleLines undocumented
+	AllowMultipleLines *bool `json:"allowMultipleLines,omitempty"`
+	// AppendChangesToExistingText undocumented
+	AppendChangesToExistingText *bool `json:"appendChangesToExistingText,omitempty"`
+	// LinesForEditing undocumented
+	LinesForEditing *int `json:"linesForEditing,omitempty"`
+	// MaxLength undocumented
+	MaxLength *int `json:"maxLength,omitempty"`
+	// TextType undocumented
+	TextType *string `json:"textType,omitempty"`
+}