DavMail POP/IMAP/SMTP/Caldav to Exchange

I made a typo in the Problem section: the round trips took over 600 seconds (thus triggering several "limited connection" flags in Thunderbird, eventually failing)

EWS: deep folder listing with ParentFolderId path reconstruction + result cache

Build: exclude OpenJFX based interactive authentication only, SWT is still available

Build: review debian javafx flag

Graph: cleanup from audit

Graph: improve recurrence handling, firstDayOfWeek is required for weekly patterns in Graph

Graph: implement full folder caching on top of delta sync, based on ConcurrentHashMap and ReentrantLock

Graph: set both size limit ($top) and max page size (odata.maxpagesize) in searchMessages, log item count in fetchNextPage

Graph: initial implementation of folder delta sync support, enable with davmail.graph.deltaSync=true

Graph: introduce refreshMessages to prepare delta sync