[FEATURE] sap.m.UploadCollection filenameLengthExceed maximumFileSize

Implemented properties maximumFilenameLength and maximumFileSize and
corresponding events filenameLengthExceed and fileSizeExceed.

Change-Id: I1877e3317d0d4eadfd9d8d057f53683ab3252c8c
Merge "[FEATURE] sap.m.UploadCollection filenameLengthExceed maximumFileSize"