Move QuickTime classes to io.scif.formats.qt

These classes go together, to support QuickTime movies and PICT images.
Repurpose LegacyQTTools as QTJavaService

The LegacyQTTools were intended to function in a manner very consistent
with how SciJava services work, so it is a natural fit.

It also allows the QTJavaService easier access to the LogService, among
other benefits.