Add initial Microsoft Teams support

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

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

@@ -0,0 +1,19 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// SitePage undocumented
+type SitePage struct {
+	// BaseItem is the base model of SitePage
+	BaseItem
+	// Title undocumented
+	Title *string `json:"title,omitempty"`
+	// ContentType undocumented
+	ContentType *ContentTypeInfo `json:"contentType,omitempty"`
+	// PageLayoutType undocumented
+	PageLayoutType *string `json:"pageLayoutType,omitempty"`
+	// WebParts undocumented
+	WebParts []WebPart `json:"webParts,omitempty"`
+	// PublishingState undocumented
+	PublishingState *PublicationFacet `json:"publishingState,omitempty"`
+}