Adds a unified UNO property for theme colors *ColorTheme
(CharColorTheme and FillColorTheme) which uses XThemeColor, that
replaces the properties *Theme, *TintOrShade, *LumOff, *LumMod.
The properties are still present for backwards compatibility and
to keep ODF support working in tests as that needs a bigger change.
Reactor the code and tests to accomodate for this change.
Change-Id: If7983decb4ba528b49fe7b5968aa9efc696a9efc
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/144783
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
197e5f8121