Make it possible to tag new file uploads without messy queries

Make it possible to tag new file uploads without messy queries

UploadBase::performUpload() now takes a $tags parameter and passes it
to LocalFile::upload() and LocalFile::recordUpload2(), which
eventually adds the requested tags to the log_id, rev_id and rc_id
that are created for the file upload.

Previously you'd have to query the database for the latest rev_id and
log_id for the page title under which the title is being uploaded, as
performUpload() is unable to return them to you because it's all
deferred in funny ways.

Bug: T121874
Change-Id: I99a8fd67c84219d2715d3d88cc21500614431179