feat: updated docs and added description to files

Backend/endpoints/auto-feiertage.go

@@ -1,5 +1,15 @@
+// endpoints contains all http endpoints
+// for more complex endpoints the *Handler function is executed first
+// by the main programm and it will then run other functions as needed
+//
+// the filenames represent the route/url for the given endpoint
+// when "-" is a "/" so this file is server at "/auto/feiertage"
+
 package endpoints
 
+// this endpoint will be called by crontab and generates the public holidays for a given year
+// after that manually added holidays with a "wiederholen" flag are copied over to the new year
+
 import (
 	"arbeitszeitmessung/helper/paramParser"
 	"arbeitszeitmessung/models"