Add fingerprint to ssh key endpoints. (#82)

gitea/user_key.go

@@ -17,6 +17,7 @@ type PublicKey struct {
 	Key         string `json:"key"`
 	URL         string `json:"url,omitempty"`
 	Title       string `json:"title,omitempty"`
+	Fingerprint string `json:"fingerprint,omitempty"`
 	// swagger:strfmt date-time
 	Created time.Time `json:"created_at,omitempty"`
 }